# Number Sense

## Kindergarten Number Combinations and Fact Fluency

In the landscape of early childhood education, the significance of learning number combinations through 10 in kindergarten cannot be overstated. While it might seem like just one of many skills…

## 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…

## Math Puzzles for the Win!

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…

## Place Value Games

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…