# Blog

## Visualzing algebra using part/whole thinking

I recently presented at NCTM‘s regional conference in Seattle. The theme of the conference wasย Everyone Belongs Here. Here’s more on that from their website: The conference will explore instructional practices…

## The Standard Algorithm for Multidigit Addition and Subtraction in 3 Easy Steps

Are you a 2nd Grade teacher who loses sleep over teaching the standard algorithm for multidigit addition and subtraction? Or a 3rd or 4th grade teacher trying to remediate students…

## Online Multiplication Fact Practice Game

Are you looking for an engaging way for your students to practice their multiplication facts? Well, of course you are! Check out this engaging multiplication fact practice game! Math Lines,…

## Understanding CRA

If you teach elementary math, then you have probably heard plenty about the concrete, representational, abstract sequence of instruction. It’s usually shortened to CRA. The idea is that concrete and…

## Fact Families vs Number Bonds

For many years, primary teachers taught fact families. If you look carefully at either the CCSSM or the Texas state standards, the TEKS, you will not see fact families mentioned…

## Modeling Place Value Relationships

They sometimes say that math is the science of patterns, and maybe nowhere is that more apparent than in our place value system. Unfortunately, we often teach place value at…

## Ten Flashing Fireflies: Booklet for the Combinations of Ten

Math practice should be engaging for students, and what could be more engaging than connecting math to a charming children’s book? And while we want math to be engaging, let’s…

## Place Value Models for Young Children

To truly understand place value, students need to not only identify theย place, or position, a digit is sitting in (e.g., the 4 is in the tens place or there are…

## Ordering Numbers on an Open Number Line

An open number lineโone that isn’t labeled with numbersโis a great tool with many applications in the math classroom. The power of an open number line is that you write…