“…These results add additional support to the growing literature of play-based mathematics interventions for lowincome and struggling early learners (Laski & Siegler, 2014;Ramani, Siegler, & Hitti, 2012;Räsänen, Salminen, Wilson, Aunio, & Dehaene, 2009;Whyte & Bull, 2008). Although many previous studies with low-income preschoolers have focused on linear number board game interventions designed to promote children's mental number line (e.g., Siegler & Ramani, 2009), a representation of their magnitude understanding, the current study suggests that numerical card games may lead to similar improvements in children's early math skills.…”