We found the Discovery Kids STEM 15-Piece Ultimate Science Experiment Kit on rollback on Walmart.com for $12.99, down from $39.99.

This 15-piece kit has everything children need to make slime, craft a working volcano, and excavate gemstones. This set is suitable for ages eight through 11.

This deal is available online only. The delivery estimate is currently eight days from the purchase date. Free shipping is available on orders of $35 or more. Free store pickup is also offered during checkout.

Buy 1 Discovery Kids STEM 15-Piece Ultimate Science Experiment Kit (reg. $39.99) $12.99, rollback price
Free shipping on orders of $35+ or free store pickup
Final Price: $12.99

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