Promoting broad and stable improvements in low-income children's numerical knowledge through playing number board games by Geetha B. Ramani and others (2008)

Primary publication: doi.org/10.1111/j.1467-8624.2007.01131.x

Primary text, publisher or institutional record: siegler.tc.columbia.edu/wp-content/uploads/2019/02/Ram-Sieg2008.pdf

Relevant evidence: Linear number board versus color board; four numerical outcomes and nine-week retention.