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 […]

## 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 […]

## Line and string designs

Making line designs is an excellent extended project for a 4th or 5th grade class. It integrates many skills and concepts, and students get to take something home they can display. A class can complete a line design, starting with an 11” square with only a large circle with the center marked on it, in […]

## 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 […]

## A Personal Finance Project

or, How can I be out of money?!? I still have checks!!! There are two versions of what my class always called The Checkbook Project.. One is an extended project built on every students’ dream: independence. The students have an income and need to research their living expenses from real life and real-time sources: newspapers, […]