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Published byLorin Gordon Modified over 8 years ago
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What will you learn? In this lesson, you will learn that any two factors and their product can be read as a comparison. You will learn how to make a comparison that 5 groups of 7 is the same as 7 groups of 5 and that both products are 35. You will learn that this representation illustrates the Commutative Property of Multiplication.
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Focus Listing Assemble in your assigned groups and explain the various ways that the number 35 can be broken down into simpler forms.
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Academic Vocabulary Commutative Property of Multiplication- This property states that factors can be multiplied in any order and the product is always the same. Compare- To examine in order to note the similarities or differences of. Decompose- To separate into components or basic elements. Equation- An equation says that two things are the same, using mathematical symbols. Factor- Factors are numbers you can multiply together to get another number.
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Academic Vocabulary (Continued) Multiply- The basic idea of multiplying is repeated addition. Operation- A mathematical process. Product- The answer when two or more numbers are multiplied together. Property of Multiplication- There are four properties of multiplication. They are the commutative, associative, multiplicative identity, and distributive properties. Represent- To serve as an example of.
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How do we utilize the Commutative Property of Multiplication? There are two parts associated with a multiplication equation; there is the factor and there is the product. When we look at 3 x 4 = 12, 3 and 4 are our factors and 12 is our product. When we change the order of this equation to 4 x 3 = 12, 4 and 3 are still our factors and 12 is still our product.
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Visual Representation of the Commutative Property http://learnzillion.com/lessons/2357-the- commutative-property http://learnzillion.com/lessons/2357-the- commutative-property
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How can we think about multiplication as a comparison? To answer this question, let’s examine the number sentence 7 times as many as 4. We have 7 groups of 4 and we know that equals 28; 7 x 4 = 28. Here’s our 4 4 4 4 4 4 4 4 The above explanation represents 7 times as many.
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If we change the order of our factors will we get the same product of 28? This time we have 4 times as many as 7. We have 4 groups of 7 and we know that equal 28; 4 x 7 = 28 just like our previous equation. Here’s our 7 7 7 7 7 The above explanation represents 4 times as many.
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Think-Pair-Share Select a partner and use the manipulatives given to display what x groups of y look like. 1.2 groups of 3 and 3 groups of 2 2.4 groups of 5 and 5 groups of 4 3.5 groups of 6 and 6 groups of 5 4.6 groups of 7 and 7 groups of 6 5.7 groups of 8 and 8 groups of 7
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What have you learned? In the conclusion of this lesson, you have learned: 1.How to represent and solve multiplication equations through models, illustrations, and writing. 2.How to illustrate that 5 groups of 7 is the same product as 7 groups of 5.
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