Math strategies is how to go about solving a problem. It could range from the simple to the complex like counting on the fingers to using tens and ones. The key is when we do math, we talk about the math strategies, asking the questions:
- How did you solve the problem?
- What is your thinking?
- Can you teach me?
We develop this math strategy chart together. I introduce a math strategy when it is appropriate in the time of year or preferably when a student comes up with it and shares/ teaches it. It is a powerful moment when a student shares/teachers the math strategy about it. We talk about math strategies when we do our daily calendar and morning math and Board Math.
- count one-by-one
- count on your fingers
- know/recognize your sets of number (without counting on fingers)
- use cubes
- jump to the BIG number first
- count on, add on
- count backwards (for take away)
- inverse (flip-flop): 3+4=7; 4+3=7
- take away inverse: 7-4=3; 7-3=4
- know your doubles
- doubles + 1
- skip count by 10s and 5s
- use your number line
- change the number around to make it work for you (very advance concept, but some actually have it to a degree!): i know 6 and 3 is 9 because 5 and 4 is 9, so i just added 1 on one side and took away 1 on the other side
- use the 100 chart
- count by 10s, go up or down for the 10s
- see a pattern: 2, 12, 22, 32, 42...102
- think of the number in 10s and 1s
- expand the number (e.g., 54 is 50+4).