** Abacus Activities
- Making the Teaching of Addition Visual: A short classroom episode that looks at how students shared ideas about 18 + 12 and what the teacher did in response (by Matthew Cheung and Heather Bourrie)
- Doing the Math (Lesson Plan for 17 – 9): Everything a teacher needs to discuss 17 – 9 in their classroom
- Mental Math Meets Standard Algorithms: When students use standard algorithms
- Moving Forward: Readings for continuing professional learning