Today I am linking up with Tara at 4th Grade Frolics for her "Monday Made It" linky.
I am soooo excited to use this with my class this week!
These are a great way to get your kids working with expanded form. I've see this idea on pinterest but I also spotted some easy to use directions at Sue Downing's TpT store for FREE!
The idea is totally simple. You can make a number from 0 to 99 by turning the cups to line up the numbers. To expand the number, just slide the outer cup to the right and you have an instant expanded form number sentence.
Below, I show how I made marks onto a third cup so that I could space the numbers evenly around the rim. Keep that cup (and make a few extras) so you can quickly make a 100's set.
I bought a whole bunch of styrofoam cups this weekend and I plan to have my class make their own set of these.
Now I just need to figure out a way to use this same priciple but use it to create more difficult expanded form number sentences like 30+14. My kiddos are REALLY struggling with this concept...... gotta love Common Core!
So head back to 4th Grade Frolics to link up and share your latest creations!