Wrap It With Less Paper
Discover the math behind efficient gift wrapping! This activity challenges families to measure a real gift box, calculate the precise amount of wrapping paper needed to cover it, and then put their plan to the test. It's a hands-on way to explore geometry and practical problem-solving.
The lesson goal is by the end of this activity, learners will be able to measure a 3D object and calculate its surface area. They will use this mathematical skill to determine the precise amount of wrapping paper needed, saving resources and becoming expert gift wrappers.
What You Need
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Learning Guide
Step-by-step guidance. No preparation required.
- 1
Introduction5 Min
- Ask your child: What is the least wrapping paper you need to wrap a present?
- Move on when Child shares initial thoughts on the challenge and is engaged in the problem.
Photo by Adonyi Gábor on Pexels - 2
Explore & Plan8 Min
- Choose a small gift box for your wrapping challenge.
- Measure its length, width, and height with a ruler, and record them on your worksheet.
- Calculate the area of each of the box's six faces, then add them all together for the total.
- Based on your total, plan the size (length and width) of the piece of wrapping paper you'll need.
- Move on when Child has chosen a box, measured its dimensions, calculated the area of each face, determined the total surface area, and planned the dimensions of the wrapping paper.
- 3
Discussion6 Min
- Explain 'surface area' and discuss your box: How did you know how much paper to add for each face?
- Ask: If you had a really long, skinny box, would it have more or less surface area than a perfectly square box that holds the same amount of stuff?
- Move on when Student can explain what surface area is in their own words, without reciting the examples they were given, and apply it to a case that was not mentioned.
Photo by Erik Mclean on Pexels - 4
Activity9 Min
- Carefully cut your wrapping paper to the exact length and width you planned.
- Wrap your chosen box using only that piece of paper.
- Observe: Was your paper the perfect size, too small, or too big? Why?
- Move on when Student has cut the planned wrapping paper and attempted to wrap the box, observing the result of their calculation.
- 5
Summary2 Min
- Ask: What did you discover today about how much paper it takes to wrap a gift?
- Ask: How could knowing about surface area help people in the real world?
- Move on when Student shares one key takeaway about surface area or efficient wrapping.
Photo by Tima Miroshnichenko on Pexels
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