Carson Dellosa 30-Piece Number Line Set, 22" x 1.5" Dry Erase Hands-on Learning Tools With Color-Coded Numbers -20 Through 20, Math Classroom Must Haves

These are very nice for children learning to add and subtract. I learned with number lines and thought it would be helpful for my granddaughter. I did not read that there were 30 in the pack so maybe take note of that. Great value for the money.

I had these laminated at my school and they are fantastic. My students got a lot of use out of them and it was a great tool for them to have.

Students love these

Plenty to pass out to my students so they can become better at math reasoning.

These wipe on/off with dry erase markers make while numbers, integers, and rational/irrational numbers to understand adding and subtracting.

These were great for my students!

I bought these for my seventh grade students this year. We spend much of Unit 1 talking about the rules of signed numbers and this helps them visualize how numbers change when you add or subtract negatives and positives. Most useful is that it’s glossy and you can absolutely mark it with expo marker and it erases right off. When ordering numbers, many of my kids wanted to have out their lines.

They are durable but could likely stand to be laminated. You can write on them with dry erase and it comes off pretty well. I love these manipulatives my high schoolers with disabilities who could quite fathom negative numbers being real, but this makes integers tangible

Perfect! Not too big and perfect size for desk. Great for fingers to count on.

I laminated to make more durable, but don’t need to. Dry erase marker works well. Great as a math manipulative.

My students used these so much and it meant they could all borrow a number line when they needed.