Help Henry find his mistakes with his multiplication homework.
Problems are written as array, distributive property, and standard algorithm. This is an excellent resource to help your students to analyze errors made with multiplication problems. My students love to find Henry's mistakes. It helps them to find their own mistakes in their work. I use this after I my students have had time to become familiar with solving multiplication problems using the area or array model, through the distributive property, and by solving using the standard algorithm.