Reflection: Adjustments to Practice Subtracting Doubles - Section 3: Practice the Concept

 

During this lesson the students really understood how many different strategies they could use to solve the subtraction problem.  Many students are comfortable using a number line or hundred chart as their go-to resource to help them solve the addition and subtraction problems.  It is my goal to get them to use those as mental models. But it is important for them to understand that they can use other strategies, such as thinking about the related addition problem, to help them solve subtraction facts

  Subtracting Doubles Reflection
  Adjustments to Practice: Subtracting Doubles Reflection
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Subtracting Doubles

Unit 3: The Action of Subtraction
Lesson 2 of 6

Objective: Students will be able to use addition doubles facts to help them subtract.

Big Idea: The big idea of this lesson is that addition and subtraction facts are related, and every subtraction fact has a related addition fact. Students can think of this inverse relationship when recalling basic subtraction facts.

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