Grade 1 Math 5.8, Ways to make numbers to 20
16:52
Grade 1 Math 5.9, Equal and not equal
17:37
Grade 1 Math 5.3, Identify related facts, Fact families
14:16
Grade 1 Math 3.3, Add doubles (Doubles fact)
13:14
Grade 1 Math 3.6, Practice the Strategies, Count on doubles
18:17
6.5 Order Fractions
16:24
Grade 1 Math 4.2, Think addition to subtract
9:28
Grade 1 Math 2.8, Take apart numbers (to subtract)
15:09