Wednesday, December 10, 2008

For Laura:

Hi Laura,
Your driver brought in your non-fiction book. Nice work! We're working on perimeter and area this week. First we looked at and described the changes that took place in squares like this:

Dimension of square Perimeter Area
1 inch by 1 inch 4 inches 1 square inch
2 inches by 2 inches
3 inches by 3 inches
4 inches by 4 inches
5 inches by 5 inches
6 inches by 6 inches
7 inches by 7 inches

Draw the squares out on grid paper. (1 square can equal 1 square inch.) Then, calculate perimeter and area for each square. Write down all the patterns and relationships you see.

Then we looked at and described perimeter and area when we doubled the size of the sides of the square.

Dimension of square Perimeter Area
1 inch by 1 inch 4 inches 1 square inch
2 inches by 2 inches
4 inches by 4 inches

3 inches by 3 inches
6 inches by 6 inches
12 inches by 12 inches

Draw the squares out on grid paper. (1 square can equal 1 square inch.) Then, calculate perimeter and area for each square. Write down all the patterns and relationships you see. What happens to the area and perimeter of a square when you double the length of the side?

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