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Lesson Plan: Insects

Subject:  Math

Grade: 3

Lesson Objective: To use multiplication and division to solve equations

Common Core StandardCCSS.MATH.CONTENT.3.OA.A.4: Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = _ ÷ 3, 6 × 6 = ?




  • When are some times that you use either multiplication or division? (Allow the students to answer.)



  • Multiplication is used when you need to add or put numbers together quickly.  Multiplication is much faster than addition. 
  • For example, if you needed to add 5 four times, instead of adding, you could multiply 5 and 4 to get 20.
  • Division is used when you need to divide numbers quickly.  Division is much faster than subtraction.
  • For example, instead of subtracting 6 from 36 to figure out how many groups you would have, you can just divide 36 by 6 to get 6.
  • Any easy way to learn multiplication and division is by learning fact families. 
  • A number or fact family is a group of equations that are made using the same set of numbers.  A number or fact family shows the relationships between the three numbers used.
  • When learning math facts, it is important to understand how numbers work together in an equation.  A number or fact family helps you understand.
  • If you look at an equation and notice that a number is missing, you should think about fact families and that will help you to figure out the missing number.
  • Now, you are going to do a worksheet with multiplication and division problems.  Remember to think about fact families when doing them.  When you are done, we will go over all of the answers.
  • Does anyone have any questions?



  • Who would like to share your answers?  (Allow the students to share.)

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Written by Kimberly Greacen, Education World® Contributing Writer

Kimberly is an educator with extensive experience in curriculum writing and developing instructional materials to align with Common Core State Standards and Bloom's Taxonomy.

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