This complete lesson will help your students think about the process of multiplying. Some common core mathematics practices that are fostered in this lesson are: makes sense of problems and perseveres in solving them, construct viable arguments, model mathematics & look for and make sense of structure. The lesson includes detailed directions and worksheets. Students work in triads to develop a comprehensive understanding of multiplying and strategies. Four additional worksheets are included for further practice as well as a set of concept cards and ideas for five minute practice using the cards.