"The Arithmechicks are headed to the beach. Their good friend Mouse is going to compete in a sandcastle contest. The chicks are excited to play all sorts of beach games--including volleyball and surfing--as they cheer on Mouse. Readers are invited to add and subtract as these math-loving chicks also explore fact families--and to watch as Mouse [and] their new friend Crab create a magnificent sandcastle. Will they win a prize?"--Amazon.com.
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