Parallelograms: Counting Squares

Tim Brzezinski, 4.4.2022

Parallelograms: Counting Squares (Area Introduction)


  • 1. Warm Up: Part 1
  • 2. Part 2
  • 3. Part 3
  • 4. Part 4: Building Parallelograms with Given Area

1.

Warm Up: Part 1

Below, a parallelogram is shown. Drag the orange trapezoids inside the parallelogram to make sure they both fit inside.
How many units long is the base of this parallelogram? (Count!)
What is the height of this parallelogram? (Count!)
Use the PEN tool to estimate (count) the number of unit squares inside this parallelogram. Write your guess using the PEN tool.
In this app, drag the 2 orange trapezoids OUTSIDE the parallelogram and use these two shapes to CREATE ANOTHER SHAPE you've studied before. (Be sure these trapezoids don't overlap!)
What new shape were you able to form?
How long is the base of this new shape?
What is the height of this new shape?
What is the area of this new shape?
Check all statements that are true below.
– Tim Brzezinski

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