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Educational Tutorial and code puzzles: Codes, Decoding and Secret Messages: How codes are used, and different types of codes, including morse code, co
Learn about different kinds of meter, rhymes, structures, and forms of poetry with The Bard at The Problem Site. Answer questions about what you've le
Probability lessons - explanation, examples, and word problems involving probability for high school students
What is a proof? Exploration of various types of proofs and how they are used
Motion in one dimension. Acceleration, velocity, displacement explanations, and many word problems. Unit 1 of the Physics Study Guide
How to simplify various kinds of radical expressions, including square roots, cube roots, and expressions with radicals in the denominators
An explanation of why significant figures are important, and how to use them in calculations.
Learn more about polynomials and polynomial equations. How to find solutions, understanding conjugates, relation between roots and coefficients, and t
 
 
 

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Match color, font, and letter in this strategy game
Mastermind variation, with words

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