1. Area Unit Lesson 07 – November 14, 2012

2. Rectangle Comparison Discussion Lesson 07 – November 14, 2012

3. Yesterday’s task Use a ruler to determine, in any way you can, which rectangle is larger or whether they are the same. Explain your work in detail using pictures, words, and or numbers. Are there any questions? 1 sq. inch

4. A B

5. C D

6. E F

7. Area Unit – Day 6 – Student Journals Journal question: How did you determine which rectangle had the largest area?

8. “We determined who had the bigger area by measuring and trying to make square units." Ashleigh “At first we divided each rectangle into square units to make it easier to count every single one.” Alexandria

9. “We took the square inch and measured them by that and we did half of a square inch because some weren’t even. That’s how we found the answer we. We measured one inch on each side of the square inch." Cassidy

10. “We figured it out by Seth multiplying and me counting square units.” A = 24 sq. in. B = 25 sq. in. C = 40 sq. in. D = 40 sq. in. E = 49 sq. in. F = 50 sq. in. Sequoyah

11. “The way Jadan and I found the area of the shapes was by both Jadan’s and my strategy. His idea was by making a line one inch down on the side of the shape. Then, on the same line, we made a straight line from one side to another and whatever the distance was, I made the number into square inches. For example, if there was a rectangle and on the side you made a mark where the first inch was, then you use the ruler and draw a straight line across the shape until the end and use the number on that row into the amount of square inches. Where my idea came in was a helping strategy. I used the ruler and put it straight down on the side. I made a mark every inch and then that part was done. This is how we determined which shape had the largest area.” Sunny

12. “What Sunny and I did was measure the shape to get the area. First, I measured the square unit to make sure it was exact. Then I measured 1 inch of the shape. Next, I measured the width of the inch on the shape and got 5 inches. So I thought since the inch was 5 inches wide, then that must be 5 square inches, and Sunny agreed. And that’s what we did for all of the shapes.” Jadan

13. Journal Question Which student’s strategy will you use to solve problems like this in the future? Why?