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Adding Three Numbers Lesson for Primary Students

This lesson teaches students how to add three numbers together, emphasizing the concept of addition and the importance of finding the sum. It includes examples, skill development activities, guided practice, and closure questions.

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Adding Three Numbers Lesson for Primary Students

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  1. Learning ObjectiveName _____________________________ Today, we will add three numbers. CFU What are we going to do today? What are we going to add? Activate (or Provide) Prior Knowledge Add. 4 6 CFU Students, you already know how to add two numbers together. Today, we will add three numbers together.

  2. Concept Development • To add means to find how many there are altogether. • The sum is the answerwhen you add numbers together. • The plus sign (+) tells us to add. Example: 4 +2 ____ 6 CFU Which is added correctly? A.B. In your own words, what does it mean to add? To add means _________________. In your own words, what is the sum? The sum is ______________________________________________.

  3. Skill Development/Guided Practice • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. Add three numbers. 5 3 7 7 9 9 8 9 10 10 10 10 CFU (#1) How did I/you know which numbers to add first? (#2) How did I/you add the third number?

  4. Skill Development/Guided Practice (continued) • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. Add three numbers. 6 7 8 8 6 6 14 14 13 13 7 5 8 9 15 15 14 14 CFU (#1) How did I/you know which numbers to add first? (#2) How did I/you add the third number?

  5. Importance • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. It is important to be able to add three numbers because: • adding three numbers helps you find how many things • there are. CFU Does anyone else have another reason why it is important to be able to add three numbers? (pair-share) Why is it important to be able to add three numbers? You many give me one of my reasons or one of your own. Which reason is more important to you? Why?

  6. Closure 1. What does it mean to add? To add means ________. 2. What is the sum? The sum is __________. 3. Add the three numbers below. 4. What did you learn today about adding three numbers? Why is that important to you? (pair-share) 4 9 9 9 10 10

  7. Independent Practice • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. Add three numbers. 5 5 12 12 6 6 3 4 7 7 10 10

  8. Periodic Review 1 • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. Add three numbers. 7 7 10 10 9 9 7 5 7 7 6 6 14 14 11 11

  9. Periodic Review 2 • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. Add three numbers. 3 4 5 5 7 7 8 8 11 11 6 9 4 6 10 10 15 15

  10. Periodic Review 3 • To add means to find how many there are altogether. • The sum is the answer when you add numbers together. • The plus sign (+) tells us to add. Add three numbers. 9 6 6 3 3 15 15 9 9 6 8 4 9 10 10 17 17

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