This video is a great explanation of how addition and multiplication are related to each other. It also demonstrates how to identify multiplication in a math reasoning problem.
This video demonstrates how to solve a multiplication problem using six different strategies. Strategies included are: basic algorithm, repeated addition, partial products, box method, lattice method, and break apart a factor. This video is very helpful in how it demonstrates so many different strategies to meet every type of learner.
This video demonstrates 6 different strategies that can be used to teach students multiplication.