Unifix Cubes are an excellent manipulative for primary grade children. I use them in Kindergarten and Grade 1 for counting, comparing, and adding and subtracting. The colors are bright and they’re nicely sized for small children. I like Unifix cubes for addition and subtraction because by using two colors, you can model a problem, get […]

## Addition and subtraction with Base 10 Blocks

Here’s a template which helps 1st graders who are having trouble with place value keep their Tens and Ones straight. The problem this addresses is developing the reflexive knowledge that Tens are written to the left of the Ones. Of course, kids will always say the Ones are “at the end,” because we read left […]

## Centimeter Number Lines

Number lines are a great way to build number sense and to model operations. Centimeter rulers, centimeter number lines, and meter sticks can be paired with Base 10 Blocks and Cuisenaire Rods to model all kinds of math, including: Base 10 Blocks Simple place value activities with Tens and Ones Addition, especially useful for adding […]

## Multiplication is Associative

Learning basic multiplication is easier if we have some association or “hook” with which to relate a particular problem. Here’s something I’ve done with 3rd graders for those difficult factors of 6, 7, and 8. I use one page per factor, so 3 sides, 2 sheets of paper per student. The students have already used […]