“…Early STEM experiences are associated with higher achievement in math, spatial reasoning, and engineering (Casey et al, 2008;Grissmer et al, 2013;Gunderson & Levine, 2011;Jirout & Newcombe, 2015;Levine, Ratliff, Huttenlocher, & Cannon, 2012;Levine, Suriyakham, Rowe, Huttenlocher, & Gunderson, 2010;Pruden, Levine, & Huttenlocher, 2011;Ramani & Siegler, 2014;Tõugu, Marcus, Haden, & Uttal, 2017;Verdine et al, 2014). For example, experimental evidence shows that playing linear number board games can improve number knowledge (Siegler & Ramani, 2009) and when parents and children engage with an instructional and playful mathematics app at home, even just once a week, children's math achievement improves (Berkowitz et al, 2015).…”