Grade 1 Math 4.4, Use 10 to subtract
11:52
Grade 1 Math 4.5, Break apart to subtract
16:24
Grade 1 Math 4.2, Think addition to subtract
15:09
Grade 1 Math 4.6, Subtraction strategy, Act out with a model to solve
17:03
Grade 1 Math 5.8, Ways to make numbers to 20
18:17
6.5 Order Fractions
17:37
Grade 1 Math 5.3, Identify related facts, Fact families
15:26
Grade 1 Math 8.1, Add & subtract within 20
15:44