Unit 7, Lesson 1
Accessing Areas and Pondering Perimeters
Extra Support Materials for Algebra 1
1.1
Warm-up
Which Three Go Together: Quadrilaterals
Which three go together? Why do they go together?
A
B
C
D
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Which three go together? Why do they go together?
A
B
C
D
Here are some rectangles.
| length (units) | width (units) | perimeter (units) | area (square units) |
|---|---|---|---|
| length (units) | width (units) | perimeter (units) | area (square units) |
|---|---|---|---|
Here are two tables. The first shows some measurements of Rectangle A, with a side length of 5 cm. The second shows some measurements of Rectangle B, which is a square.
Complete the table for Rectangle A, and be prepared to explain your reasoning.
| length (cm) | width (cm) | perimeter (cm) | area (sq cm) |
|---|---|---|---|
| 5 | 1 | ||
| 5 | 2 | ||
| 5 | 4 | ||
| 5 | 20 | ||
| 5 | 40 | ||
| 5 | 28 | ||
| 5 | 50 | ||
| 5 |
Complete the table for Rectangle B, and be prepared to explain your reasoning.
| length (cm) | width (cm) | perimeter (cm) | area (sq cm) |
|---|---|---|---|
| 1 | 1 | ||
| 2 | 2 | ||
| 3 | 3 | ||
| 4 | 16 | ||
| 8 | |||
| 100 | |||
Sketch the graph of each pair of quantities, where the width is plotted along the
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