## 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…

Skip to content# Number Sense

## Understanding CRA

## Fact Families vs Number Bonds

## Modeling Place Value Relationships

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

## Place Value Models for Young Children

## Ordering Numbers on an Open Number Line

## Math Puzzles for the Win!

## Place Value Games

## PreK Math: What Does Early Numeracy Look Like?

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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…

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…

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…

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…

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…

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

Who doesn’t love a good puzzle? We engage students in algebraic thinking and productive struggle when we use math puzzles! Read about various types of math puzzles you can use…

I know that it’s summer, and you might not be thinking about the beginning ofย next school year. But place value is typically one of the first units for many grade…

People have some pretty strong feelings about what PreK math and even Kindergarten math should look like. How do we help young children develop important mathematical understandings while still incorporating…