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
This math station is called "in and out". The students simply drop a handful of cubes onto the in and out board. They record the number in the circle for the first addend and the cubes outside of the circle as the addend. Then solve the number sentence.