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Student Instructions
Cameron just invented The Shrink-O-Matic. It shrinks objects for 1 hour! You look through it like a camera, press one of the red fraction buttons, then press the X button to multiply, and —BOOM! — whatever you had it aimed at shrinks!
The fraction you push determines the new size of the object.
Cameron said, “If you aimed the Shrink-O-Matic at a 12-foot tall ladder and pushed the ⅓ button, it would shrink to ⅓ of its original size. Because ⅓ of 12 is 4, you’d now have a 4-foot tall ladder.”
He is excited to try out his new invention, and he started a list of things he might shrink.
1. Select 
2. Follow the directions on each 
3. Select 
when you finish ALL pages.
How could you get started?
You can shrink an object to ½ of its original size by dividing by 2. How can this information help you figure out the size of an object shrunk to ⅓, ¼, or ⅕, of its size?
How does knowing ⅓ of the size help you figure out ⅔ of the size?
Teacher Notes (not visible to students)
Math at Home activities include a variety of math routines that invite students to engage in meaningful mathematical problem solving and discourse. Math at Home activities are provided by The Math Learning Center with support from the Maier Math Foundation. MATH IN OUR WORLD Math in Our World activities invite students to solve problems about math in our homes and the world around them. These problems feature glimpses into other families’ lives. Many of the problem situations can be extended. Students can take it to the next level by writing and solving their own problems about the situation. Take a look at the Reference for Educators for sample student responses for this specific activity. https://mathathome.mathlearningcenter.org/activity/1558 WANT TO LEARN MORE? Visit https://mathathome.mathlearningcenter.org/about
