MathStart 3: Ready, Set, Hop! (Building Equations)

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Who's the better hopper? Matty, the tall frog? Or Moe, who's just plain big? Only a hopping contest can settle the matter. It takes Moe only five hops to make it to the big rock. Matty needs two more hops. So how many hops did Matty take? (5 hops + 2 hops+?). The happy hoppers keep going until -- splash! -- they're in the pond. Knowing how equations are built is central to children's learning how to interpret and write number sentences. Used with permission from Stuart J. Murphy.

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