Equate vs 15 Puzzle
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Equate
Equate is a mathematical board game made by Conceptual Math Media. Players place numbered and arithmetic-symbol tiles on a 19-by-19 board to form valid equations, earning points for their placements in a structure that resembles a crossword game. Its purpose is to practice arithmetic through turn-based play, so it is suited to students, families, and classrooms using game activities to reinforce c...
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15 Puzzle
The 15 Puzzle is a sliding-tile puzzle consisting of fifteen numbered square tiles arranged in a four-by-four frame with one empty space. Players move adjacent tiles into the gap to restore a specified numerical order, and only half of all apparent arrangements are mathematically reachable from any given starting position. The puzzle became an international craze around 1880 and remains a standard...
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