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In this activity related to computer programming, learners give directions to a "robot" (either an adult or another learner) and find out which instructions the robot is able to follow, and how their

This activity about cryptographic techniques illustrates how to accomplish a simple, but nevertheless seemingly impossible task—making a fair, random choice by flipping a coin between two people who d

In this activity, learners make their own encrypted code to pass along secret messages using a printable cipher wheel.

In this activity, learners examine nanoscale structures of common things.

In this activity, learners will code an algorithm to make it through a maze.

In this activity, learners calculate the number of milliliters of water a nearby tree transpires per day.