This website gives a great example of using the commutative and associative properties of addition using Skittles.  There is a video available that will help demonstrate successful implementation.

This is a random three-digit subtraction generator that is

Smartboard friendly, with big buttons. Click the reset values button and the program will generate two 3-digit numbers that students can use to reinforce their ability to subtract.  I use this program to generate subtraction questions and students can use whiteboards to solve the answer.  This can also be used to play games like king of the row or relay races.

Find the patterns of input-output tables, number lines, word problems, multiplication patter, skip counting patterns, addition and subtraction patterns, and image patterns

This is a simple number line make that allows teachers to generate custom number lines  Below are som

This is a great game that works on multiplication and division fluency by having students create a fact family.  Numbers get larger as you advance through each level.  It can also be used for addition and subtraction fact families. This game can also help students learn their addition and subtraction fact families.