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In this activity, learners use an astrolabe to measure the altitude of objects. Learners will first practice taking measurements by measuring the altitude of trees and buildings.

In this activity, learners work in pairs to measure each other's ankles with lengths of string.

In this activity, learners build a tool called an inclinometer that can find the height of any distant object, from a tree to the North Star.

In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height.