During this topic, we will be teaching children strategies to help them become quicker with their math facts. BUT…the idea of addition is adding 2 parts together to determine the whole. They can always use manipulatives, draw a picture, use their fingers, or count on to figure out an answer to an addition problem!!!!
The first strategy is doubles facts. We learned a rap to help us memorize the doubles facts.
It’s the doubles baby, let’s go, let’s go
It’s the doubles baby and we’ll start with 0
4+4=8 That’s great!
6+6=12 That’s swell
7+7=14 Let’s lean
8+8=16 That’s keen!
9+9=18 Jelly Bean!
10+10=20 That’s plenty!
Then they have a doubles +1 strategy. If the numbers are 1 apart (neighbors on the number line) then you can double the smaller number and add 1. For example, 5+6 can be thought of as 5+(5+1).
Then they have the doubles +2 strategy. If the numbers sit 2 apart on the number line there are two ways to think about it.
You can double the smaller number and add 2
5+7…can be thought as 5+5+2
You can use the number that is between them and double that….5+7…can be thought of as 6+6…because if seven gives one to the five…the five becomes 6 and the seven becomes a 6.
AGAIN: These strategies are being introduced to the students. Whichever way they are comfortable solving the problem is OK.
Drawing a picture
Using their fingers