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Sum 15 Game | Educational Montessori STEM Math Game for Kids

Sum 15 Game | Educational Montessori STEM Math Game for Kids - Main image
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$10.22 $15.49 In stock

The Sum 15 Game is an engaging Montessori STEM math game tailored for young learners and enjoyable for adults alike. Players take turns placing one disk at a time, aiming to be the first to create a sum of 15 using three disks. The board features laser-engraved text and durable, thick acrylic rings in two colors, which may vary. Crafted primarily for strength and aesthetic appeal, the 9.5” x 2.5” board supports additional challenges, such as forming sums of 17 with odd numbers or combining odd and even numbers. Designed and manufactured in Hudson, Florida.


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Customer Reviews (4.0 / 5 · 5 reviews)

Lily ★★★★★

The wooden disks feel solid in your hand and slide onto the board smoothly, which makes the whole thing feel less like a cheap toy. My 7-year-old picked up the "first to make 15" rule in one round and now begs to play it after dinner instead of asking for the tablet.

Sophia ★★★★★

My kids fight over who gets to play first every night now—it's that good. The turn-based disk placement is simple enough for my 6-year-old but still keeps me on my toes trying to block her moves. Honestly, it's the rare game that feels like both a lesson and pure fun.

Lucy ★★★★☆

My 7-year-old actually asks to play this, which says a lot since she usually fights me on math practice. The turn-taking with one disk at a time keeps it simple enough for her but I still have to think about my moves. Only wish the box were smaller so it'd fit better on a shelf.