No More Counting on Fingers

Donnalyn Yates clearly thought carefully about how young children learn math facts — rhymes, pictures, and a clapping game all target different memory pathways, and classroom testing is more evidence than many workbooks offer. But it's self-published, the effectiveness claims are author-reported rather than independently verified, and no critical reviews exist. Worth a look for parents and homeschool educators if they can find it, but not a confident recommendation.