See also the related posts “Laura Overdeck: Math for Pleasure” and “Laura Overdeck: Street Math.”

See my post “Examining the Statistics in “Math at Home Adds Up to Achievement in School” by Talia Berkowitz, Marjorie Schaeffer, Erin Maloney, Lori Peterson, Courtney Gregor, Susan Levine and Sian Beilock” for my evaluation of the evidence.