Video: Making Sense of the Distributive Property of Multipl Over Addition

Video: Making Sense of the Distributive Property of Multipl Over Addition
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Mpeg-4 Video File

(24 MB|N/A)
Standards
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  • Standards
This product is a 10 min 34 sec mp4 whiteboard video that helps students make sense of the Distributive Property of Multiplication Over Addition using the Area Model. This geometric approach is accessible because it builds on what students already know: the "length x width" formula for the area of a rectangle and the Additive Property of Area. The sample video for this product applies the Area Model to help students learn why 9(n +5) equals 9n + 9x5, where 9(n + 5) represent the area of the rectangle using the "length x width" formula and 9n + 9x5 represents the area of the rectangle using the Additive Property of Area. The Area Model is demonstrated for several examples, and students can use patterns (an accessible method for discovering and learning new concepts) to apply the Distributive Property of Multiplication Over Addition.
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Apply the properties of operations to generate equivalent expressions. For example, apply the distributive property to the expression 3 (2 + 𝘹) to produce the equivalent expression 6 + 3𝘹; apply the distributive property to the expression 24𝘹 + 18𝘺 to produce the equivalent expression 6 (4𝘹 + 3𝘺); apply properties of operations to 𝘺 + 𝘺 + 𝘺 to produce the equivalent expression 3𝘺.
Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, coefficient); view one or more parts of an expression as a single entity. For example, describe the expression 2 (8 + 7) as a product of two factors; view (8 + 7) as both a single entity and a sum of two terms.
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