Toss these cute flashcards into your pool bag or carry-on and pull them out when the kids get antsy. Each set is geared to a specific grade and comes with 120 colorful, double-sided cards filled with math puzzles, word challenges, awesome facts (like the longest backward motorcycle ride), and Mad-Lib-like stories. They’ll keep your child so busy you’ll be able to sneak in some learning (er, reading), too. MelissaandDoug.com, $13. Ages 3 to 10.
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