Popsugar Parenting Stem Best Stem Toys 2019 49 Stem Toys That Make Learning More Fun Than Ever 9 April 2019 by Rebecca Brown View On One Page Photo 41 of 49 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 41 ZOOB Challenge ZOOB Challenge ($30) teaches open-ended problem solving, and building. ZOOB Challenge $30 from walmart.com Buy Now Previous Next Start Slideshow StemToysShoppableKid ShoppingGift GuideGifts