Blog
Practical tips around our books: learning math facts, keeping the mind sharp, solving puzzles, preparing for a test, and winding down at the end of the day.
Addition and Subtraction Within 20: 6 Strategies to Build Math Fact Fluency
Make 10, use doubles, connect addition and subtraction: six simple strategies that help children ages 6–8 add and subtract within 20 with confidence, plus a low-pressure way to practice.