Place value die. a cube for tens and ones. Can easily be extended for larger numbers. hundreds, one thousands, ten thousands etc. Students can also build numbers with bean sticks or unifix cubes if they're not ready for base 10 blocks

First Grade Fever!: French Fry Math Center FREEBIE & a Super-Big Thank You! As weeks go by keep adding french fries to the different numbers. It reinforces how many ways you can get to the same number

The Math Journal Component ~ WOW! This post is packed with fabulous ideas. :) Love the idea to use journals as a "math tub" activity with a spiraled skill. Look into the ones the teacher made on TPT.

Place Value anchor chart - image only. I would use this "frayer model" for a variety of Math ideas. How many ways can you model an addition/subtraction problem using your strategies, etc.

*Could also do this for bigger numbers too! Matching ten frames to numbers - this is a great exercise since this is a main focus now in common core standards for math in preK & K.