Thursday, June 28, 2012

Area Models of Multiplication


Area Model Video


     What is an area model for multiplication?  I learned this week that the area model for multiplication is a pictorial way of representing multiplication. In the area model, the length and width of a rectangle represent factors, and the area of the rectangle represents their product.  According to Math and Teaching.org "The area model for multiplication establishes the groundwork for helping visual learners in the conceptual understanding of the traditional algebraic skills of polynomial multiplication and factoring."  

Here is an example of the area model for multiplication: 




     I think the area model is a great way to show students that multiplication is nothing more than adding up partial products.  Base 10 blocks are useful manipulatives for teaching kids about multiplication.  The blocks allow students to get their hands on the numbers to see how the numbers add up to the final product.  I can see how cooperative learning groups would be a good way to let kids practice the area model.  Start with groups of 3-4 students and have them use the base 10 blocks together to solve the equations.   
    

Math and Teaching - Area Model




     Websites like Kidspitation have manipulatives that would be fun for students to use while learning the area model for multiplication.  Many classrooms have SmartBoards that students could use to practice on during instruction.  Students would solve a 2 digit multiplication problem by drawing an area model and writing the parital products as they go.  The process of adding the partial products would help students see the step by step process.  I think the area model is a method that will make sense to kids and allow them to see their answers.     


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