Try Wall Pop dry erase stickers on a table in your classroom! I use it for spelling work, small group instruction, and math time. They add a pop of color, too! I love this idea for my kiddie table for small groups!
For when they get older and start learning fractions. Learn fractions in a creative way by making these fraction flowers out of paper plates- includes a set of printable fraction circles. This makes learning math fun!
Counting and Measuring with Lego: Preschool Maths Game - Good way to visually compare numbers - I would suggest making the corresponding numbers (like 5 and 15 or 8 and the same color to help see the pattern relationship between the numbers and 15
addition and subtraction, fraction to decimal and will be concluding with probability. We are creating a huge end of year math poster to showcase all of the grade math they have mastered to take with them to grade.