Reflection: Checks for Understanding Mowing Lawns - Section 3: Student Practice


While checking for understanding, I found that many students struggled with explaining the zero in the one's place. When looking back on this lesson, I could have also included an activity within the main lesson to help students develop an thorough explanation. For example, we could have compared problems, such as 6 x 15 and 60 x 15. When further analyzing 60 x 15, we could have decomposed the 60 x 15 into 6 x 15 x 10. 

Here are two conferences in which I try to guide the students to a deeper understanding. 

#1: Finding a Product that is 10 x Greater

#2: 30 = 3 x 10

  Checks for Understanding: Explaining the Zero in the Ones Place
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Mowing Lawns

Unit 12: Multiplication: Double-Digit x Double-Digit
Lesson 1 of 7

Objective: SWBAT multiply a 2-digit number by multiples of 10 under 100.

Big Idea: There is always a 0 in the ones place of the product when multiplying by a multiple of 10.

  Print Lesson
Math, Number Sense and Operations, Multiplying by Multiples of 10, multiplication
  100 minutes
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