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Public Key Encryption: Kid Krypto
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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.
Battleships: Searching Algorithms
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This activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships.
Arctic Story Puzzles
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This activity has three story puzzles learners can solve to learn about life in the Arctic.
Coma Cluster of Galaxies
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In this activity, learners will first learn the basics of galaxy classification and grouping.
Fantastic Fractions
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In this math lesson, learners compare pattern blocks to visually understand halves, thirds, and sixths.
Tossing Coins
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In this math game (Page 17 of the Are You Game? PDF), learners investigate probability by tossing coins.
Cryptographic Protocols: The Peruvian Coin Flip
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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