Measuring a Pumpkin Project Halloween Activity Circumference Volume Pi Ratio

Measuring a Pumpkin Project Halloween Activity Circumference Volume Pi Ratio
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8 MB|3 student worksheets + answer keys
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In this Measuring a Pumpkin: Circumference & Volume, students will bring a small pumpkin and estimate their circumference and diameter using a previously measured pumpkin as reference. They will use a string to measure their pumpkin and see if their estimations were close to the actual measurements. Then, students will write the definition for circumference and diameter and then get their ratio to conclude that the ratio of the circumference and diameter of a circle equals Pi. Students will compare their ratios with other students and realize that it will always be Pi. An additional activity is added for more advanced students where they will have to calculate the approximate volume of their pumpkin using the sphere volume formula and calculate how many pumpkins are needed to get 3 cups of pumpkin filling to bake a pie.

Hit CC Standards 7.G.4, G-GMD.1, G-GMD.3 and TEKS 7.5B, 7.9B, 8.7A

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✔ Answer key included!

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Purchase of this unit entitles the purchaser only the right to reproduce the pages in limited quantities for classroom use only. Duplication for an entire school, an entire school system or commercial purposes is strictly forbidden without written permission from the publisher. Licenses are non-transferable and therefore can not be passed from one teacher to another. No part of this resource is to be shared with colleagues or used by an entire team, grade level, school or district without purchasing the correct number of licenses. If you are a coach, principal or district interested in transferable licenses that would accommodate yearly staff changes, please contact me for a transferable license quote at

Copyright Information:

© Erika Hernandez, Hit the Standards.

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Total Pages
3 student worksheets + answer keys
Answer Key
Teaching Duration
1 hour
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