Explore Area of A Rectangle
Warm Up:
Build your own figures on a grid using unit squares to explore areas of different shapes and figures.
Help me to decide how many tiles do I need to buy to fill the entire floor of the room below.
How many tiles do you think I should buy? How did you come up with that answer?
Let's explore the area of a rectangle. Please watch the video below.
Play around with the points: B, C, D, and form NEW rectangle. Notice how the Area of Rectangle change with different lengths and widths.
Move the points, B, C, D, to form a rectangle with a length of 7 and a width of 5. What is the Area of the rectangle that you just created?
I have put the tiles on a graph. Notice that each tile fits in one square.
Based on the above picture, calculate the number of tiles that I need.
What is the area of my room if the area of each tile is 1m2? Explain your answer.
If I decide to reconstruct my room and make the length 2m longer, and the width 3m wider. 1. What is the area of my new room? 2. How many tiles do I need to buy? Please explain your answer.