3 Act Math

Act 1

1. How many cookies will fit?
2. Write down a guess.

Act 2

3. What information would be useful to figure this out?
4. Write down some questions you have in your head right now.

pan dimensions

Dough Size

Act 3


5. What would happen if the spacing between cookies was only 1 inch?
6. What would happen if the cookies had a side length of 2 inches?

Common Core Standards
Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
solve problems related to perimeter and area of rectangles where dimensions are whole numbers



4 thoughts on “Cookies

  1. Okay – this is so very REAL WORLD MATH. Love this lesson – using it with home schooled families in my Charter – Visions in Education. Sacramento California

  2. Why wouldn’t it be 12? Doesn’t it have to be 2 inches from the sides of the pan as well or just the cookies?

    1. Good point, Ryan! Looks like I didn’t factor that in with the sides that don’t have folded edges. I guess that could lead to a conversation with the students. Did the guy follow the directions correctly? Maybe they could make a case for why it should be 12 instead. Thanks for the comment!

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