Hape Mighty Hammer Domino E1056 Double-Sided Wooden Ball Domino Set for Kids

• Amazon now offers the Hape E1056 Double-Sided Wooden Robot Domino Ball Toy Set, now $19.89 (originally $32.0). You need to click the coupon on the page.
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: The ball rolls down and hits the robot's hammer, the hammer drops and knocks over the whole row of dominoes, setting off a chain reaction all the way to the little flag that pops up at the end—kids will watch the whole thing and want to do it again. The clear tunnel lets them see the ball traveling through, and while playing they naturally pick up concepts like potential energy, gravity, and inertia. Kids four and up can set up the track and play on their own for a good while.