I saw a cute picture on Pinterest using Cheez-It’s to practice area and perimeter. My first thought was, “Pefect Squares!” and could not wait to develop a Square Roots Cheez-It lesson.
I made a graphic organizer to go into their Geometry Booklets so that they could more effectively take notes. It is half-sheet sized so it will also fit into composition books.
I used one box of Cheez-It’s per class. What I loved the most about this activity was that it was very visual for my students (and they remembered it well because of the food addition). Each time we did a square root, I would ask them, “Do 6 cheez-it’s make a square?” And they remember it is a rectangle.
The kids loved making perfect squares with their Cheez-It’s and I even had a few groups combine their Cheez-It’s at the end to see who could make the largest perfect square!
The number line is one of the most important aspects of this lesson. I have them label it (see pictures) so that they can quickly estimate what a square root SHOULD be before they blindly punch it into their calculators. This also helps when simplifying square roots using the radical sign instead of decimals. I challenge them to see how close they come when estimating square roots with decimals. They estimate, and then check it with their calculators. The next day I played “Around the World” with perfects squares and estimating square roots in their heads. Here is the Around the World PPT. Square Roots – Around the World