Place Value Cups. Use the cups to understand place value practice counting forward and backward learn the names of large numbers decompose numbers to expanded form. I would either label the cups 'ones' 'tens' etc. or add a comma cup or decimal point cup
multiplication wheels - free printables for these and other fun math resources Public education. This will help me to explain to students just starting to learn multiplication tables how to multiple numbers.
They were challenged with the task of creating an array with their cereal, to write the multiplication problem it represents, and to write a word problem to go with it. So easy and fun! The kids loved the fact they could eat the cereal they didn't use.