Reflection: Checks for Understanding Is Your Answer Reasonable? - Section 5: Closure


I like to clear up all misconceptions that I have noticed by the end of each lesson.  Sometimes I do this as I notice the groups or individual making the mistake.  A lot of the time, if I notice the same misconception, I call the class back together as a whole to address this problem.  Afterwards, I let them go back to their group activity.  In this lesson,the common mistake I noticed was some students forgetting that once they round the number to a place, everything behind it becomes zeros.  To correct this, I got the students to count for me.  For example, if they were rounding to the hundreds, then we counted by 100.  If they were rounding to the 1,000, then they counted by thousands.  

  Checks for Understanding: Misconceptions
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Is Your Answer Reasonable?

Unit 12: Multiplying and Dividing
Lesson 3 of 23

Objective: SWBAT check for reasonableness by using estimation to make sure they used the correct calculations.

Big Idea: Using estimation can help you check to see if your answer is reasonable.

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Math, Number Sense and Operations, Operations , reasoning, estimation
  55 minutes
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