Addition derived fact strategies

Ways to learn:

Lecture:
- video 1: overview
- video 2: using doubles
- video 3: making 10
- text
Readings:
- In Teaching Student Centered Mathematics by Van de Walle and Lovin, read the sections Doubles and Near Doubles and Make-Ten facts on pages 101-103
Youtube:
- watch this first grade doubles + 1 lesson
Optional: read Edward Rathmell's essays: How can you teach using doubles for addition? and How can you teach making 10 for addition?
Very optional: a previous year's longer lessons on using doubles and making 10

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