** Abacus Activities
- Abacus Editor Greetings / Mary Lou Kestell & Kathy Kubota-Zarivnij
- RESEARCH SUMMARY: Algebra As Generalized Arithmetic
- LET'S DO MATH: Investigating the Commutative Property
- LET'S DO MATH: Investigating Commutative, Associative, and Distributive Properties
- LINKS TO LITERATURE AND MANIPULATIVES: Exploring the Commutative Property
- LET'S DO MATH: Investigating the Big Idea of "Doing and Undoing"
- NEXT STEPS FOR YOUR PROFESSIONAL LEARNING - Application to Your Classroom
- NEXT STEPS FOR YOUR PROFESSIONAL LEARNING - Suggested Readings