It's essentially a neat and tidy kit of blocks, shapes, wheels, and other pieces — all non-toxic – that in total creates 20 different challenges for kids, each one more advanced than the next.

Crows can count... out loud! They do so similarly to human toddlers who are learning to tally things up. A neuroscientist trained birds to produce a number of calls in response to random visual cues.

Effect of Block Play on Language Acquisition and Attention in Toddlers: A Pilot Randomized Controlled Trial. Archives of Pediatrics and Adolescent Medicine , 2007; 161 (10): 967 DOI: 10.1001 ...