Search
strands.number-sense.h1

Number Sense

Understanding numbers, their relationships and numerical reasoning

strands.algebra.h1

Algebra

Using symbols to solve equations and express patterns

strands.geometry.h1

Geometry

Studying shapes, sizes and spatial relationships in mathematics

strands.measurement.h1

Measurement

Quantifying and comparing attributes like length, weight and volume

strands.operations.h1

Operations

Performing mathematical operations like addition, subtraction, division

strands.statistics-probability.h1

Probability and Statistics

Analyzing uncertainty and likelihood of events and outcomes

Community Resources
Get started with our Resources
GeoGebra

Calculator Suite

Explore functions, solve equations, construct geometric shapes

GeoGebra Graphing

Graphing Calculator

Visualize equations and functions with interactive graphs and plots

GeoGebra Geometry

Geometry

Explore geometric concepts and constructions in a dynamic environment

GeoGebra 3D Calculator

3D Calculator

Graph functions and perform calculations in 3D

GeoGebra Scientific Calculator

Scientific Calculator

Perform calculations with fractions, statistics and exponential functions

GeoGebra Notes

Notes

Explore our online note taking app with interactive graphs, slides, images and much more

App Downloads
Get started with the GeoGebra Apps
strands.number-sense.h1

Number Sense

Understanding numbers, their relationships and numerical reasoning

strands.algebra.h1

Algebra

Using symbols to solve equations and express patterns

strands.geometry.h1

Geometry

Studying shapes, sizes and spatial relationships in mathematics

strands.measurement.h1

Measurement

Quantifying and comparing attributes like length, weight and volume

strands.operations.h1

Operations

Performing mathematical operations like addition, subtraction, division

strands.statistics-probability.h1

Probability and Statistics

Analyzing uncertainty and likelihood of events and outcomes

Community Resources
Get started with our Resources
GeoGebra

Calculator Suite

Explore functions, solve equations, construct geometric shapes

GeoGebra Graphing

Graphing Calculator

Visualize equations and functions with interactive graphs and plots

GeoGebra Geometry

Geometry

Explore geometric concepts and constructions in a dynamic environment

GeoGebra 3D Calculator

3D Calculator

Graph functions and perform calculations in 3D

GeoGebra Scientific Calculator

Scientific Calculator

Perform calculations with fractions, statistics and exponential functions

GeoGebra Notes

Notes

Explore our online note taking app with interactive graphs, slides, images and much more

App Downloads
Get started with the GeoGebra Apps

Gerry Stahl

  • Resources
  • Favorites
  • People
  • Construct a Perpendicular Line

    Activity

    Gerry Stahl

  • Equilateral triangle on 3 parallel lines

    Activity

    Gerry Stahl

  • Book of the Construction Pod Game

    Book

    Gerry Stahl

  • Construction Pod Game: Part E

    Activity

    Gerry Stahl

  • Construction Pod Game: Part D

    Activity

    Gerry Stahl

  • Construction Pod Game: Part C

    Activity

    Gerry Stahl

  • Construction Pod Game: Part B

    Activity

    Gerry Stahl

  • Construction Pod Game: Part A

    Activity

    Gerry Stahl

  • The Circumcenter of a Triangle

    Activity

    Gerry Stahl

  • Construct the Midpoint

    Activity

    Gerry Stahl

  • The Drag Test

    Activity

    Gerry Stahl

  • Translate by a Vector

    Activity

    Gerry Stahl

  • The Incenter of a Triangle

    Activity

    Gerry Stahl

  • The Construction Crew Game

    Book

    Gerry Stahl

  • Challenge 44: The Nine-Point Circle of a Triangle

    Activity

    Gerry Stahl

  • Challenge 43: The Euler Segment of a Triangle

    Activity

    Gerry Stahl

  • Challenge 49: Dependencies in the World

    Activity

    Gerry Stahl

  • Challenge 38: Build a Hierarchy of Quadrilaterals

    Activity

    Gerry Stahl

  • Challenge 24: Side-Angle-Side (SAS)

    Activity

    Gerry Stahl

  • Challenge 21: Construct a Congruent Angle

    Activity

    Gerry Stahl

  • Challenge 16: Copy a Length

    Activity

    Gerry Stahl

  • Challenge 15: An Isosceles-Right Triangle

    Activity

    Gerry Stahl

  • Challenge 09: Construct the Midpoint

    Activity

    Gerry Stahl

  • Challenge 07: Construct an Equilateral Triangle

    Activity

    Gerry Stahl

Load more
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2025 GeoGebra®