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IM 7.9.11 Lesson: Building a Trundle Wheel

A tool that surveyors use to measure distances is called a trundle wheel.

How does a trundle wheel measure distance?

Why is this method of measuring distances better than the methods we used in the previous lesson?

How could we construct a simple trundle wheel?

What materials would we need?

Your teacher will give you some supplies. Construct a trundle wheel and use it to measure the length of the classroom. Record:

the diameter of your trundle wheel

the number of clicks across classroom

the length of the classroom (Be prepared to explain your reasoning.)