Discover how triangles can be named and classified according to their side lengths or angle measures.

[i]Answer these open ended questions on your own or with others to form deeper math connections. [/i]

Putting It All Together

Exploring Types of Triangles

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High School

Middle School

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进入课堂

在 3D 中绘制函数图象并进行运算

探究函数性质, 求解方程根式, 构建几何图形

在动态环境中探索几何概念和尺规作图

用交互式图形和绘图将方程及函数可视化

探索在线笔记应用, 支持交互图像, 滑动条, 图片等更多功能.

执行分数运算, 统计分析及指数函数计算

计算器

练习基本运算, 如加法, 减法和除法

数学中自变量与因变量的对应关系

研究数学中的形状, 大小和空间关系

量化和比较长度, 权重和体积等属性

理解数字, 它们的关系和数字推理

执行数学运算, 比如加法, 减法, 除法

分析事件与结果的不确定性和可能性

研究角度, 三角形, 三角函数和比例

立即开始使用 GeoGebra

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This resource was reviewed for quality by the GeoGebra Team.

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开放式问题 {1}

谷歌课堂

Evaluate absolute value expressions to solve number and word problems, including finding horizontal and vertical distances between points and lines.

Absolute Value Expressions

Determine the absolute value of a number with and without models in number and word problems.

Absolute Value of Integers

Use addition and subtraction to find unknown measures of non-overlapping angles.

Adding and Subtracting Angles

Add and subtract decimals using models and pictures to explain the process and record the results.

Adding and Subtracting Decimals

Add and subtract fractions and mixed numbers with like denominators (without regrouping) in number and word problems.

Adding and Subtracting Fractions or Mixed Numbers with Like Denominators

Add and subtract fractions and mixed numbers with unlike denominators in number and word problems.

Adding and Subtracting Fractions and Mixed Numbers with Unlike Denominators

Add and subtract fractions and mixed numbers using models and pictures to explain the process and record the results in number and word problems.

Adding and Subtracting Fractions and Mixed Numbers

Model or compute with integers using addition or subtraction in number and word problems.

Adding and Subtracting Integers

Adding, Subtracting, and Multiplying Polynomials

Identify additive inverses (opposites) and multiplicative inverses (reciprocals) and use them to solve number and word problems.

Additive and Multiplicative Inverse

Rewrite or simplify algebraic expressions including the use of the commutative, associative, and distributive properties, and inverses and identities in number and word problems.

Algebraic Properties

Use a variety of triangles, quadrilaterals, and other polygons to draw conclusions about the sum of the measures of the interior angles.

Angle Sum Properties of Triangles, Quadrilaterals, and Polygons

Identify the congruent and supplementary relationships of the angles formed by cutting parallel lines by a transversal.

Angles Formed by Parallel Lines

Identify and label the vertex, rays, and interior and exterior of an angle. Use appropriate naming conventions to identify angles.

Angles

Estimate and calculate areas with scale drawings and maps.

Area in Scale Drawings and Maps

Determine the area of rectangles, squares, and composite figures using nonstandard units, grids, and standard units in number and word problems.

Area of Rectangles, Squares, and Composite Figures

Use grids to develop the relationship between the total numbers of square units in a rectangle and the length and width of the rectangle (l x w); find area using the formula in number and word problems.

Area of Rectangles with Grids

Recognize the effect of scale factors or ratios on areas and volumes of similar geometric figures; use formulas to solve number and word problems.

Area and Volume of Similar Geometric Figures

Organize, display, and interpret information in bar graphs.

Bar Graphs

Organize, display, and interpret information in box-and-whisker plots.

Box and Whisker Plots

Estimate and calculate using numbers expressed in scientific notation.

Calculating Using Scientific Notation

Indicate the probability of a chance event with or without models as certain, impossible, more likely, less likely, or neither likely nor unlikely using benchmark probabilities of 0, 1/2, and 1.

Certain, Likely, Unlikely, Impossible Events

Identify and use appropriate scales and intervals in graphs and data displays.

Choosing Scales and Intervals for Graphs

Organize, display, and interpret information in circle graphs using ratios and percents.

Circle Graphs

Identify combinations of fractions that make one whole.

Combinations of Fractions

Compare data and distributions of data, numerical and contextual, to draw conclusions, considering the measures of center and measures of variability.

Comparing Data Distributions

Compare decimals (tenths and hundredths) with and without models.

Comparing Decimals

Compare and order fractions using common numerators or denominators.

Comparing Fractions

Compare and order integers with and without models.

Comparing Integers

Compare and order numbers less than 10,000.

Comparing Numbers Less Than 10,000

Write a ratio or rate to compare two quantities

Comparing Quantities with Ratios

Compare and order rational numbers with and without models.

Comparing Rational Numbers

Complement of an Event

Define and identify complementary and supplementary angles.

Complementary and Supplementary Angles

Solve quadratic equations by completing the square.

Completing the Square to Solve Quadratic Equations

Find the inverse of a function or relation. Verify that two functions are inverses using their graphs or composition of functions.

Composition and Inverse of Functions

Model the concept of percent and relate to the value in decimal or fractional form.

Converting Between Percents and Fractions or Decimals

Locate points in all quadrants of the coordinate plane using ordered pairs in number and word problems.

Coordinate Plane and Ordered Pairs

Locate a point in Quadrant I of a coordinate grid given an ordered pair; name the ordered pair for a point in Quadrant I of a coordinate grid.

Coordinate Plane

Use models to make predictions and interpret the correlation coefficient of the model; distinguish between correlation and causation.

Correlation Coefficient, Correlation and Causation- Differences, Design and Examples

Use proportions to express relationships between corresponding parts of similar figures.

Corresponding Parts of Similar Figures

Estimate and compute the cost of items greater than $1.00; make change.

Cost of Items and Making Change

Determine the sample space for an event using counting strategies (include tree diagrams, permutations, combinations, and the fundamental counting principle).

Counting Strategies for Sample Spaces

Describe cross-sectional views of three-dimensional figures.

Cross Sections of Solids

Use geometric models and equations to investigate the meaning of the cube of a number and the relationship to its cube root.

Cube and Cube Roots

Describe data using or selecting the appropriate measure of central tendency; choose a measure of central tendency based on the shape of the data distribution.

Data, Data Distribution, and Central Tendency

Read, write, and compare numbers with decimal place values to the thousandths place or numbers greater than one million.

Decimals Greater Than One Million

Determine the measure of an angle in degree mode or in radian mode.

Degree and Radian Measure of Angles

Use dimensional analysis to rename quantities or rates

Dimensional Analysis

Write equations to represent direct variation and use direct variation to solve number and word problems.

Direct Variation

Use the distance formula to find the distance between two points. Use the midpoint formula to find the coordinates of the midpoint of a segment.

Distance Formula and Midpoint Formula

Calculate distances from scale drawings and maps.

Distance in Scale Drawings and Maps

Use the distributive property to represent and simplify numerical expressions.

Distributive Property

Represent division of fractions and mixed numbers with and without models and pictures in number and word problems; describe the inverse relationship between multiplication and division.

Dividing Fractions and Mixed Numbers

Divide two fractions or a fraction and a whole number in number or word problems.

Dividing Fractions

Represent division of a unit fraction by a whole number or a whole number by a unit fraction using models to explain the process in number and word problems.

Dividing Unit Fractions

Model division in a variety of ways including sharing equally, repeated subtraction, rectangular arrays, and the relationship with multiplication.

Division Models

Draw and measure angles using a protractor. Understand that a circle measures 360 degrees.

Drawing and Measuring Angles with a Protractor

Describe the effect of operations on size and order of numbers.

Effect of Operations on Numbers

Identify outliers and determine their effect on the mean, median, and range of a set of data.

Effect of Outliers on Mean, Median, and Range of Data Sets

Determine the effects of changes in slope and/or intercepts on graphs and equations of lines.

Effects of Changes in Slope and Intercepts of Lines

Elapsed Time

Write an equation to describe the algebraic relationship between two defined variables in number and word problems, including recognizing which variable is dependent.

Equations in Two Variables

Solve equations involving powers and roots by using inverse relationships.

Equations Involving Powers and Roots

Use the definition of rational numbers to convert decimals and fractions to equivalent forms.

Equivalent Forms of Decimals and Fractions

Convert fractions and terminating decimals to the thousandths place to equivalent forms without models; explain the equivalence.

Equivalent Fractions and Decimals

Use models to write equivalent fractions, including using composition or decomposition or showing relationships among halves, fourths, and eighths, and thirds and sixths.

Equivalent Fractions Models

Write equivalent fractions with smaller or larger denominators.

Equivalent Fractions

Use reasoning with equivalent ratios to solve number and word problems.

Equivalent Ratios

Estimate and compute sums and differences with decimals.

Estimating Decimal Sums and Differences

Estimate the measure of an object in one system given the measure of that object in another system.

Estimating Measurements

Estimate, measure and compare capacity using appropriate tools and units in number and word problems

Estimating and Measuring Capacity

Estimate, measure and compare length using appropriate tools and units in number and word problems

Estimating and Measuring Lengths

Estimate, measure and compare weight using appropriate tools and units in number and word problems

Estimating and Measuring Weights

Estimate and compute products of whole numbers with multi-digit factors.

Estimating Products of Whole Numbers

Estimate products and quotients of decimals or of mixed numbers.

Estimating Products and Quotients of Fractions and Mixed Numbers

Apply appropriate types of estimation for number and word problems that include estimating products and quotients.

Estimating Products and Quotients

Estimate and solve division problems with multi-digit divisors; explain solution.

Estimating Quotients of Whole Numbers

Estimate the square root of a number between two consecutive integers with and without models. Use a calculator to estimate the square root of a number.

Estimating Square Roots to the Nearest Integer

Estimate sums and differences with fractions and mixed numbers.

Estimating Sums and Differences of Fractions and Mixed Numbers

Apply appropriate type of estimation for sums and differences.

Estimating Sums and Differences

Evaluate algebraic expressions in number and word problems.

Evaluating Algebraic Expressions

Use exponential notation and repeated multiplication to describe and simplify exponential expressions.

Exponential Expressions

Simplify numerical expressions that may contain exponents.

Expressions with Exponents

Factor quadratic polynomials, including special products.

Factoring Quadratic Polynomials

Understand that many whole numbers factor in different ways.

Factors of Whole Numbers

Identify and make figures with line symmetry.

Figures with Symmetry

Calculate the areas of triangles, parallelograms, trapezoids, circles, and composite figures in number and word problems.

Finding the Area of a Triangles, Parallelograms, Trapezoids, Circles, Composite Figures

Find the fractional part of a whole number or fraction with and without models and pictures.

Finding the Fractional Part

Identify or generate numerical and geometric patterns; correct errors in patterns or interpret pattern features.

Finding the Rule of a Number Pattern

Use models to find volume for prisms and cylinders as the product of the area of the base (B) and the height. Calculate the volume of prisms in number and word problems.

Finding Volume with Base and Height

Use models to develop the relationship between the total distance around a figure and the formula for perimeter; find perimeter using the formula in number and word problems.

Formula for Perimeter

Use models to develop formulas for finding areas of triangles, parallelograms, trapezoids, and circles in number and word problems.

Formulas for Area of Triangles, Parallelograms, Trapezoids, and Circles

Find the lateral area and surface area of a right prism, pyramid, right circular cylinder, and cone using formulas.

Formulas for Lateral Surface Area of Solids

Represent division of whole numbers as a fraction in number and word problems.

Fraction as Division

Use frequency tables, dot plots, and other graphs to determine the shape, center, and spread of a data distribution.

Frequency Tables and Dot Plots

Interpret probability models for data from simulations or for experimental data presented in tables and graphs (frequency tables, line plots, bar graphs).

Frequency Tables, Line Plots and Bar Graphs

Use and interpret function notation in number and word problems; determine a value of the function given an element of the domain.

Functions and Function Notation

Generate a set of ordered pairs using a rule which is stated in verbal, algebraic, or table form; generate a sequence given a rule in verbal or algebraic form.

Generating Ordered Pairs and Sequences

Graph absolute value functions and their corresponding inequalities.

Graphing Absolute Value Functions and Inequalities

Use ordered pairs derived from tables, algebraic rules, or verbal descriptions to graph linear functions.

Graphing Linear Functions Using Ordered Pairs

Graphically solve systems of linear equations.

Graphing Systems of Linear Equations

Graphing to Solve Quadratic Equations

Find and interpret the maximum, the minimum, and the intercepts of a quadratic function.

Graphs of Quadratic Functions

Organize, display, and interpret multiple sets of information in the same graph including multiple bar, multiple stem-and-leaf, and multiple line graphs.

Graphs with Multiple Sets of Information

Organize, display, and interpret information in graphs containing scales that represent multiple units.

Graphs with Scales That Represent Multiple Units

Find factors, common factors, and the greatest common factor of numbers; explain.

Greatest Common Factor

Organize and compare one set of information in histograms and bar graphs.

Histograms vs. Bar Graphs

Organize, display, and interpret information in histograms.

Histograms

Identify proportional parts of similar figures using rulers and protractors.

Identifying Similar Figures Using Measurement

Recognize that a statistical question is one that will require gathering data that has variability.

Identifying Statistical Questions

Describe the intervals for which a function is increasing or decreasing.

Increasing and Decreasing Functions

Graph or identify simple inequalities using symbol notation >, <, ≤, ≥, and ≠ in number and word problems.

Inequalities Using Symbolic Notation >, <, ≤, ≥, and ≠

Make inferences about a population based on a sample and compare variation in multiple samples.

Inferences From Samples

Use concepts of positive numbers, negative numbers, and zero (e.g., on a number line, in counting, in temperature, in "owing") to describe quantities in number and word problems.

Integers

Identify and interpret the intercepts of a linear relation in number and word problems.

Intercepts of Linear Relations

Use properties, definitions, and theorems of polygons to solve problems related to the interior and exterior angles of a convex polygon.

Interior and Exterior Angles of Polygon

Use remainders in problem-solving situations and interpret the remainder with respect to the original problem.

Interpreting Remainders

Identify, draw, and name: points, rays, line segments, lines, and planes.

Introduction to Geometry

Use models to investigate the concept of the Pythagorean Theorem.

Investigating the Pythagorean Theorem

Use rules of exponents to simplify numeric and algebraic expressions.

Laws of Exponents

Find multiples, common multiples, and the least common multiple of numbers; explain.

Least Common Multiple

Organize, display, and interpret information in line plots with a horizontal scale in fractional units.

Line Plots with Fractional Scales

Write a problem given a simple linear equation or inequality.

Linear Equations and Inequalities in Word Problems

Model and solve linear inequalities using the properties of inequality in number and word problems.

Linear Inequalities in Problems

Identify relations as directly proportional, linear, or nonlinear using rules, tables, and graphs.

Linear, Nonlinear, and Directly Proportional Relations

Identify linear and nonlinear relationships in data sets.

Linear and Nonlinear Relationships in Data Sets

Define and identify alternate interior, alternate exterior, corresponding, adjacent and vertical angles.

Lines and Angles

Derive a linear equation that models a set of data (line of best fit) using calculators. Use the model to make predictions.

Lines of Best Fit

Identify the number of lines of symmetry in a figure and draw lines of symmetry.

Lines of Symmetry

Solve a literal equation for an indicated variable.

Literal Equation for an Indicated Variable

Divide using single-digit divisors with and without remainders.

Long Division

Determine the mean absolute deviation (MAD) for one or more sets of data. Describe the meaning of MAD for given data sets.

Mean Absolute Deviation (MAD) of Data Sets

Mean of Data Sets

Select the appropriate measure of variability; choose a measure of variability based on the presence of outliers, clusters, and the shape of the data distribution.

Measures of Variability

Median of Data Sets

Mode of Data Sets

Approximate a linear model that best fits a set of data; use the linear model to make predictions.

Modeling Data and Making Predictions

Construct or complete a table of values to solve problems associated with a given relationship.

Modeling with Tables

Determine the value of sets of coins and bills using cent sign and dollar sign appropriately. Create equivalent amounts with different coins and bills.

Money Math

Add multi-digit numbers with regrouping in number and word problems.

Multi-digit Addition with Regrouping

Subtract multi-digit numbers with regrouping in number and word problems.

Multi-digit Subtraction with Regrouping

Write a multiplication or a division sentence to represent a number or word problem; solve.

Multiplication and Division Sentences

Multiply a 1-digit number by a 2-digit multiple of 10.

Multiplying a 1-digit by a 2-digit Number

Recognize and use patterns in powers of ten (with or without exponents) to multiply and divide whole numbers and decimals.

Multiplying and Dividing by Powers of 10

Multiply and divide decimals using models and pictures to explain the process and record the results.

Multiplying and Dividing Decimals with Models

Multiply or divide two decimals or a decimal and a whole number in number and word problems.

Multiplying and Dividing Decimals

Model or compute with integers using multiplication or division in number and word problems.

Multiplying and Dividing Integers

Multiply or divide with mixed numbers in number and word problems.

Multiplying and Dividing Mixed Numbers

Multiply two fractions or a fraction and a whole number in number and word problems.

Multiplying Fractions

Multiply a multi-digit whole number by a 1-digit whole number or a 2-digit multiple of 10.

Multiplying Multi-digit Numbers

Solve multi-step number and word problems using the four operations.

Multi-Step Problems

Identify the nets for prisms, pyramids, cylinders and cones in geometric and applied problems.

Nets of Solids

Determine whether a linear equation has one solution, infinitely many solutions, or no solution.

Number of Solutions to System of Equations

Read and write word names for numbers from 1,000 to 9,999.

Numbers from 1,000 to 9,999

Read, write, and compare whole numbers from 10,000 to less than one million using standard and expanded notation.

Numbers from 10,000 to One Million

Read and write word names for whole numbers from 101 to 999.

Numbers from 101 to 999

Read, write, or model numbers in expanded form using decimal fractions or exponents.

Numbers in Expanded Form

Write whole numbers in scientific notation; convert scientific notation to standard form; investigate the uses of scientific notation.

Numbers in Scientific Notation

Describe a data set by its number of observations, what is being measured, and the units of measurement.

Observation, Measurement, and Sampling

Solve one-step linear equations and inequalities and graph solutions of the inequalities on a number line in number and word problems.

One-step Linear Equations and Inequalities

Perform multi-step operations with rational numbers (positive and negative) in number and word problems.

Operations on Rational Numbers

Use order of operations including parentheses and other grouping symbols to simplify numerical expressions.

Order of Operations

Identify outliers and clusters in bivariate data in tables and scatter plots.

Outliers and Clusters in Scatter Plots

Use properties, definitions, and theorems of angles and lines to solve problems related to adjacent, vertical, complementary, supplementary, and linear pairs of angles.

Pairs of Angles

Determine and interpret the components of algebraic expressions including terms, factors, variables, coefficients, constants, and parts of powers in number and word problems.

Parts of an Algebraic Expression

Identify parts of a numerical or algebraic expression.

Parts of an Expression

Patterns and Problem Solving

Solve number and word problems involving percent increase and percent decrease.

Percent Increase and Decrease

Calculate or estimate the percent of a number including discounts, taxes, commissions, and simple interest.

Percent of a Number

Solve number and word problems using percent proportion, percent equation, or ratios.

Percent Problems

Determine perimeter using concrete models, nonstandard units, and standard units in number and word problems.

Perimeter

Investigate and determine the relationship between the diameter and the circumference of a circle and the value of pi; calculate the circumference of a circle.

Pi as a Relationship between Diameter and Circumference

Place Value with Thousands

Indicate and compare the place value of each digit in a multi-digit whole number or decimal.

Place Value

Write the equation of and graph linear relationships given two points on the line.

Point Point Form of a Line

Write the equation of and graph linear relationships given the slope and one point on the line.

Point Slope Form of Line

Points on a Number Line

Distinguish between a population and a sample and draw conclusions about the sample (random or biased).

Population vs. Sample

Make predictions based on results from surveys and samples.

Predictions From Samples

Identify prime and composite numbers less than 100.

Prime and Composite Numbers

Prime Factorization

Determine a simple probability using geometric figures.

Probabilities in Geometry

Describe the probability of a chance event using a fraction or ratio.

Probability of an Event as Fractions or Ratios

Determine the probability of compound events (with and without replacement).

Probability of Compound Events

Use a coordinate grid to solve number and word problems. Describe the path between given points on the plane.

Problems in the Coordinate Plane

Use the commutative and associative properties to add or multiply numerical expressions.

Properties of Addition and Multiplication

Verify how properties and relationships of geometric figures are maintained or how they change through transformations.

Properties of Geometric Figures

Interpret and compare properties of linear functions, graphs, and equations.

Properties of Linear Functions, Graphs, and Equations

Use manipulatives, pictorial representations, and appropriate vocabulary (e.g., polygon, side, angle, vertex, diameter) to identify and compare properties of plane figures.

Properties of Plane Figures

Use the commutative, associative, and distributive properties, and inverses and identities to solve number and word problems with rational numbers.

Properties of Rational Numbers

Write a proportion to model a word problem; solve proportions.

Proportions

Use the Pythagorean Theorem and its converse to solve number and word problems, including finding the distance between two points.

Pythagorean Theorem and its Converse

Determine the quartiles or interquartile range for a set of data.

Quartiles and Interquartile Range of Data

Radical Expressions

Range of Data Sets

Determine the ratio or rate of change of a relation given a table or graph.

Ratio or Rate Given a Table or Graph

Read and write word names for rational numbers in decimal form to the hundredths place or the thousandths place.

Rational Numbers in Decimal Form

Describe the relationship between corresponding terms in two or more numerical patterns or tables of ratios

Ratios and Proportions

Describe, use, and compare real numbers. Use the definition of rational numbers to derive and distinguish irrational numbers.

Real, Rational, and Irrational Numbers

Find indicated terms, the common ratio, or the common difference using recursive sequence formulas; write recursive sequence formulas.

Recursive Sequence Formulas

Locate, given the coordinates of, and graph plane figures which are the results of translations or reflections in all quadrants of the coordinate plane.

Reflections in the Coordinate Plane

Define and distinguish between relations and functions, dependent and independent variables, and domain and range; identify whether relations are functions numerically and graphically.

Relations and Functions

Relate a percent to its equivalent fraction or decimal.

Relationship Between Percent and Fraction or Decimal

Use models to investigate the relationship of the volume of a cone to a cylinder and a pyramid to a prism with the same base and height.

Relationship Between Volume of a Cone and a Cylinder or a Pyramid and a Prism

Identify and draw intersecting, parallel, skew, and perpendicular lines and line segments. Identify midpoints of line segments.

Relationships Between Two Lines and Midpoints of Line Segments

Represent fractions concretely and symbolically, including representing whole numbers as fractions.

Representing Fractions

Represent multiplication or division of mixed numbers with and without models and pictures.

Representing Multiplying and Dividing Mixed Numbers

Rewrite and compare decimals to fractions (tenths and hundredths) with and without models and pictures.

Rewriting Fractions and Decimals

Use properties, definitions, and theorems to solve problems about rigid transformations and dilations of plane figures.

Rigid Transformations and Dilations of Plane Figures

Locate, given the coordinates of, and graph plane figures which are the results of rotations (multiples of 90 degrees) with respect to a given point.

Rotations in the Coordinate Plane

Round decimals to a given place value; round fractions and mixed numbers to a whole number or a given fractional place value.

Rounding Decimals, Fractions, and Mixed Numbers

Round whole numbers to a given place value.

Rounding Whole Numbers

Given a list of ordered pairs in a table or graph, identify either verbally or algebraically the rule used to generate and record the results.

Rules for Generating Ordered Pairs

Determine and use scale factors to reduce and enlarge drawings on grids to produce dilations.

Scale Factors

Organize, display, and interpret information in scatter plots. Approximate a trend line and identify the relationship as positive, negative, or no correlation.

Scatter Plots

Describe, or graph plane figures which are the results of a sequence of transformations.

Sequence of Transformations on the Coordinate Plane

Use set notation to describe domains, ranges, intersection, and union of sets. Identify cardinality of sets, equivalent sets, disjoint sets, complement, or subsets.

Set Theory

Use proportional reasoning to solve problems related to similar polygons.

Similar Polygons

Use properties of triangles to solve problems related to similar triangles and the relationships of their corresponding parts.

Similar Triangles and Correspondence

Identify corresponding parts of similar and congruent figures.

Similarity and Congruence

Determine a simulation, such as random numbers, spinners, and coin tosses, to model frequencies for compound events.

Simulations to Estimate Probabilities of Compound Events

Describe the slope of a line given in the context of a problem situation; compare rates of change in linear relationships represented in different ways.

Slope as Rate of Change

Write the equation of and graph linear relationships given the slope and y-intercept.

Slope Intercept Form of a Line

Find the slope of a line given two points on a line, a table of values, the graph of the line, or an equation of the line in number and word problems.

Slope of a Line

Identify from a set of numbers which values satisfy a given equation or inequality.

Solving Inequalities

Solve linear equations using the associative, commutative, distributive, and equality properties and justify the steps used.

Solving Linear Equations

Determine algebraically or graphically the solutions of a linear inequality in two variables.

Solving Linear Inequalities

Solve systems of equations or inequalities algebraically and graphically that include nonlinear relationships.

Solving Nonlinear Systems of Equations and Inequalities

Use geometric models and equations to investigate the meaning of the square of a number and the relationship to its positive square root. Know perfect squares to 625.

Squares and Square Roots

Relate standard and expanded notation to 3- and 4-digit numbers.

Standard and Expanded Notation of 3 and 4-digit Numbers

Contrast statements about absolute values of integers with statements about integer order.

Statements with Absolute Values of Integers

Organize, display, and interpret information in stem-and-leaf plots.

Stem and Leaf Plots

Subtract 2- and 3-digit numbers with and without models for number and word problems that require regrouping.

Subtracting 2- and 3-digit Numbers

Use nets or formulas to find the surface area of prisms, pyramids, and cylinders in number and word problems.

Surface Area of Solids

Calculate the surface area and volume of a sphere in number and word problems.

Surface Area and Volume of a Sphere

Write and solve systems of linear equations in two or more variables algebraically in number and word problems.

Systems of Linear Equations in Two or More Variables

Organize, display, and interpret information in tables and graphs (frequency tables, pictographs, and line plots).

Tables and Graphs

Determine the probability from experimental results or compare theoretical probabilities and experimental results.

Theoretical vs. Experimental Probability

Identify the place value of each digit in a multi-digit number to the thousandths place.

Thousandths Place in Decimals

Transform (translate, reflect, rotate, dilate) polygons in the coordinate plane; describe the transformation in simple algebraic terms.

Transformations in the Coordinate Plane

Identify transformations on nonlinear parent functions using function notation, algebraic equations, or graphs.

Transformations on Nonlinear Parent Functions

Use models or points in the coordinate plane to illustrate, recognize, or describe rigid transformations (translations, reflections, and rotations) of plane figures.

Transforming Plane Figures

Locate, given the coordinates of, and graph points which are the results of rigid transformations in all quadrants of the coordinate plane; describe the path of the motion using geometric models or appropriate terms.

Transforming Points in the Coordinate Plane

Translate between models or verbal phrases and algebraic expressions.

Translating Algebraic Expressions

Write a linear equation or inequality to represent a given number or word problem; solve.

Translating Linear Equations and Inequalities

Translate between models or verbal phrases and numerical expressions.

Translating Numerical Expressions

Recognize conditions of side lengths that determine a unique triangle, more than one triangle, or no triangle.

Triangle Inequality Theorem

Use trigonometric ratios to represent relationships in right triangles to solve number and word problems.

Trigonometric Ratios

Solve two-step linear equations and inequalities and graph solutions of the inequalities on a number line.

Two-step Linear Equations and Inequalities

Write number sentences using any combination of the four operations that represent a two-step word problem; solve.

Two-Step Problems Using the Four Operations

Construct and interpret a two-way table to display two categories of data from the same source.

Two-way tables

Identify and draw angles (acute, right, obtuse, and straight).

Types of Angles

Name polygons by the number of sides. Distinguish quadrilaterals based on properties of their sides or angles; relate quadrilaterals based upon their hierarchical attributes.

Types of Quadrilaterals

Identify and classify triangles according to the measures of the interior angles and the lengths of the sides; relate triangles based upon their hierarchical attributes.

Types of Triangles

Convert measures of length, area, capacity, weight, and time expressed in a given unit to other units in the same measurement system in number and word problems.

Unit Conversion for Length, Area, Capacity, Weight, and Time

Use models to represent a fraction as a product of a whole number and a unit fraction in number and word problems.

Unit Fractions

Given a proportional relationship represented by tables, graphs, models, or algebraic or verbal descriptions, identify the unit rate (constant of proportionality)

Unit Rate and the Constant of Proportionality

Calculate unit rates in number and word problems, including comparison of unit rates.

Unit Rate

Calculate unit rates of ratios that include fractions to make comparisons in number and word problems

Unit Rates with Fractions

Use benchmark numbers (zero, one-half, one) and models to compare and order fractions.

Using Benchmark Numbers with Fractions

Solve quadratic equations using properties of equality.

Using Properties of Equality to Solve Quadratic Equations

Solve quadratic equations using the quadratic formula.

Using the Quadratic Formula to Solve Quadratic Equations

Use definitions and theorems of angles formed when a transversal intersects parallel lines.

Using Theorems for Angles Formed by Parallel Lines

Make predictions based on theoretical probabilities or experimental results.

Using Theoretical and Experimental Probability to Make Predictions

Find the value of a variable in a number sentence.

Value of a Variable in a Number Sentence

Analyze graphs, identify situations, or solve problems with varying rates of change.

Variable Rate of Change

Venn Diagrams

Model the concept of the volume of a solid figure using cubic units.

Volume of a Cube and Cubic Units

Determine the volume of composite figures in number and word problems.

Volume of Composite Figures

Calculate the volume of cylinders, pyramids, and cones in number and word problems.

Volume of Solids

Describe the meaning of an unknown in the context of a word problem.

Word Problems with One Unknown

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Exploring Types of Triangles

Exploring Types of Triangles

Putting It All Together

开放式问题 1

开放式问题 2

开放式问题 3