This Power Point presentation illustrates step-by-step the process of Dynamic Addition (addition with regrouping) using the Montessori Stamp Game material. I use it as a second lesson to reinforce what has been introduced, but you can also use it as an introduction lesson. It is helpful to display this PPT on a SMART board or other large projection display while presenting to a group larger than 5 because it gives everyone a good view. It is also helpful to use this PPT for children who need a personal review lesson. They just need to watch it on a regular computer.