I created this product to use with a student in my classroom who needs computer access to programs due to an inability to write legibly. With this product he is able to simply click on the box and input his numbers. Students must understand the strategy of lattice multiplication before using this product, or it can be used to help gain an understanding of lattice. Included on each slide are decimals that can be dragged to the appropriate place, arrows that can be moved and used to show placem