Subject: Math
Grade Level: 4 th
Unit Title: Multi-Digit Multiplication and Division
Big Idea/Theme: How to find the product or quotient
Understandings: What’s the Value?
Essential Questions:
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How can you use models to explain multiplication?
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How can you use models to explain division?
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How are repeated addition and multiplication related?
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Why do you use division instead of repeated subtraction?
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How can estimation help you solve a math problem?
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When would you use multiplication to solve real world problems?
Timeframe Needed for Completion: 4 – 5 weeks
Grading Period: 2nd nine weeks
Common Core Standards
Use place value understanding and properties of operations to perform multi-digit arithmetic
4.NBT.5 - Multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays , and/or area models.
4.NBT6 - Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors , using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division.
Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Use the four operations with whole numbers to solve problems.
4.OA.1
Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.
Gain familiarity with factors and multiples
4.OA.4 - Find all factor pairs for a whole number in the range
1 –100. Recognize that a whole number is a multiple of each of its factors . Determine whether a given whole number in the range 1
–100 is a multiple of a given one-digit number.
Determine whether a given whole number in the range 1 –100 is prime or composite .

Essential Skills/Vocabulary:
Skills
Students will be able to:
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Multiply a whole number up to four digits by a one digit number
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Develop fluency with two-digit by two-digit multiplication
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How to use different models to solve multiplication and division facts
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Develop fluency up to four-digit division
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Write and identify equations and statements for multiplicative comparisons
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Illustrate and or explain the calculation of the problems using a variety of strategies
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Learn to estimate products and quotients
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Learn to use multiplication and division facts to solve real world situations
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Demonstrate and understanding of factors and multiples of whole numbers.
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Understand the difference of a prime number and composite number
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Understand why the number 1 is not prime
Materials Suggestions:
Goal 1
Envision math – Topics 7 -8
Investigation math – Units 1, Unit 3
Accelerated Math
Vocabulary:
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Product

Quotient
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Equation
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Rectangular arrays
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Area models
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Factor
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Multiple
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Factor pairs
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Prime
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Composite
Assessment Tasks:
Formative assessments
Textbook materials
Examine View Generator
ClassScape