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In this activity, learners build a figure that moves and "comes to life" when they pull its string.

Most people will break a bone in their body at some point in their life, but how much force does it take to break one?

Get all wrapped up in a lesson about skin!

In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp-poi