board spring bouncing bounces hop skipping frisks jumping jump square geometry

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Photo credit: © breitformat / Alamy / Afripics
License: Royalty Free
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Keywords: abc, angle, blackboard, board, bounces, bouncing, calculate, chalk, compute, des, education, educational, establishment, frisks, function, geometry, hop, institution, jump, jumping, mathematics, pisa, pythagoras, school, skipping, spring, square, trigonometric