In this episode, we discuss mental math strategies for subtraction, an elementary social justice math project, and the first two strategies for comparing fractions. The comparing fractions section begins at 25:00. Ruth's Subtraction Strategies Video Sherry Parrish's Number Talks Book SMILE: Seeing Myself In the Library Everywhere Lynchburg Education Foundation First Book Marketplace Allison Krasnow on Twitter Comparing Fractions PD Slides Cuisenaire Rods from MathsBot Braining Camp Pattern Blocks from MathsBot Empowered Problem Solving Braining Camp Deci Blocks Images