Volume, From the Ground Up
Take a look at the figure below. How many cubes is it made of? A student might answer 16. Can you figure out why? If you look closely, there are…
CRA
- Fractions & Decimals · Grades 3-5 · Grades K-2 · Instructional Strategies · Number Sense · Operations · Teacher Tips
Why the Concrete-Representational-Abstract (CRA) Sequence Matters
First, I have a quiz for you. If you speak and write Hindi, you can skip this part! For everyone else, look at the symbols below. Can you tell which…
Teaching Place Value with Base-Ten Blocks: Free Place Value Mats & Activities
If you’re not familiar with CRA, it stands for Concrete, Representational, and Abstract. It’s a research-based instructional sequence that helps students develop a deeper understanding of mathematical concepts. If you’d…
Modeling Division
It’s impossible to overstate the importance of the third grade math curriculum. Students get their first real exposure to multiplication, division, and fractions—all critical math ideas. We must approach instruction…
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…
