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In this activity, learners conduct a simulation exercise related to public key encryption and try to intercept a message sent between two learners.

This activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships.

This activity has three story puzzles learners can solve to learn about life in the Arctic.

In this game, learners use clues to identify mystery shapes. Use everyday objects (like from the pantry) as the shapes.

In this activity, learners will first learn the basics of galaxy classification and grouping.

In this math lesson, learners compare pattern blocks to visually understand halves, thirds, and sixths.

In this activity, learners make a black box device that serves as an excellent analogy to Rutherford's famous experiment in which he deduced the existence of the atomic nucleus.

In this math game (Page 17 of the Are You Game? PDF), learners investigate probability by tossing coins.

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