## 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

# Subtracting Doubles

Unit 3: The Action of Subtraction
Lesson 2 of 6

## 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.

Print Lesson
8 teachers like this lesson
Standards:
Subject(s):
60 minutes

### Kristen O'Connor

##### Similar Lessons

###### A Grinchy Christmas
Big Idea: This Grinch inspired lesson pushes 1st graders to attempt 2 part story problems. It also is a great way to introduce the topic in 2nd grade!
Favorites(9)
Resources(14)
New Orleans, LA
Environment: Urban

###### 10 and Some More
1st Grade Math » Complements of 10 and 20
Big Idea: Your students will play a game where they combine two single digit numbers and then record that total in terms of how it relates to ten.
Favorites(6)
Resources(20)
Waitsfield, VT
Environment: Suburban

###### It's As Basic As That
3rd Grade Math » Understanding Multiplication
Big Idea: Students need to master the basic operations. The common core suggests that all four operations are mastered by the end of third grade. This lesson will help determine where to start and what to do next.
Favorites(15)
Resources(11)
Troy, MI
Environment: Suburban