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Giving a toddler puzzles does something narrower than the marketing claims: in a University of Chicago study, children who played with them between two and four had better spatial skills by four and a half, a specific ability, tied to later success in STEM - ScienceBlog.comScienceBlog.com · Sat, 08 Aug 2026 16:14:52 GMTDoers and Dreamers: A Q& A with Laura Demoreno of The Daily Stem/Giving Stem - Times of San DiegoTimes of San Diego · Thu, 30 Jul 2026 17:25:00 GMT