Welcome activity! Look at the photographs below. Select the picture that shows how. . . You feel now as you work with your child on math problems. *Turn and tell the person next to you about the picture you selected and why*
What do you mean by strategies? In second grade, students learn new ways to tackle addition and subtraction equations. These strategies are meant to help children better understand how numbers are made up of other numbers, rather than just memorizing an algorithm. These strategies build a foundation for students understanding of the base ten system. Students learn to compose and decompose numbers.
Composing vs. Decomposing Composing: putting numbers together to make a new number. Decomposing: breaking apart numbers. Example: 10 ones = 1 ten Example: 1 ten = 10 ones
Quick Draw (Addition) 162 + 229 = ?
Expanded Method (Addition) 162 + 229 = ?
Number Line (Addition) 162 + 229 = ?
Your Turn to Practice! - Fold your paper longways into threes - Solve 129 + 465= all three ways (on one side of your paper) - Let us know if you have questions!
Quick Draw (Subtraction with regrouping) 321 - 153 = ?
Expanded Method (Subtraction with regrouping) 321 - 153 = ?
Number Line (Subtraction with regrouping) 321 - 153 = ?
Your Turn to Practice! - On the other side of your paper. . . - Solve 761 -295= all three ways (on one side of your paper) - Let us know if you have questions!