2-1 Finding Missing Parts of 6 and 7
2-2 Finding Missing Parts of 8
2-3 Finding Missing Parts of 9
2-4 Introducing Subtraction Expressions
2-5 Stories about Taking Away
2-6 Stories about Comparing
2-7 Stories about Missing Parts
2-8 All Kinds of Subtraction Stories
2-9 Connecting Addition and Subtraction
2-10 Connecting Models and Symbols
2-1 Practice
2-1 Reteach
2-2 Practice
2-2 Reteach
2-3 Practice
2-3 Reteach
2-4 Practice
2-4 Reteach
2-5 Practice
2-5 Reteach
2-6 Practice
2-6 Reteach
2-7 Practice
2-7 Reteach
2-8 Practice
2-8 Reteach
2-9 Practice
2-9 Reteach
2-10 Practice
2-10 Reteach
2-11 Practice
2-11 Reteach