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 […]

## Make a 10,000 Base 10 Block

On Denise Gaskins’ excellent site Let’s Play Math, I came across a mention of a “Super Rod,” in response to a question about how we would visually portray the number 10,000. It’s clumsy to draw if you’re going to be consistent in the way you draw the different pieces. But it’s do-able in blocks. This […]

## Base 10 Blocks with a number line and 10 by 10 grid

Base 10 Blocks (B10B) are helpful in modeling place value because a Ten rod is self-evidently equal to 10 Ones. This is an improvement over bundling straws, say, where you only know a bundle of 10 by counting them. A Ten rod, on the other hand, is another, greater unit. There are two common ways […]