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Learning Objective Name________________________

Learning Objective Name________________________ Today, we will add numbers. CFU What are we going to do today? What are we going to add? Activate (or Provide) Prior Knowledge. Today, we are going to add numbers. We are going to add numbers. 1. 2. 9. 8. CFU

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Learning Objective Name________________________

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  1. Learning Objective Name________________________ Today, we will add numbers. CFU What are we going to do today? What are we going to add? Activate (or Provide) Prior Knowledge Today, we are going to add numbers. We are going to add numbers. 1. 2. 9 8 CFU Teacher solves #1; students solve #2. Students, you already know add facts. Today, we will use add facts to add larger numbers. 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  2. Concept Development • Add (+) means to put together. • The symbol1 (+), is called the plus sign. We use it when we have to add. • After we add, the answer is called the sum. • 1 letter, picture or sign that stands for something else Example: Noah won 42 tickets at the arcade. Yvonne won 53 tickets. How many tickets did they win altogether? Noah and Yvonne won 95 tickets. 95 CFU Using your whiteboards, write the symbol that means add. Which problem is an add problem, A or B? Explain your answer. A. B. Write the sum of the two numbers. The sum of 42 and 53 is _____. In your own words, what does add mean? Add means ____________________. 95 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  3. Skill Development/Guided Practice Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 0 8 0 8 8 7 4 9 7 0 7 0 8 7 CFU How did I add digits in the ones column? How did I add digits in the tens column? How did I add the digits in the hundreds column? How did you add digits in the ones column? How did you add the digits in the tens column? How did you add the digits in the hundreds column? 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  4. Skill Development/Guided Practice (continued) Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 9 4 7 8 5 8 2 7 2 5 students minutes CFU How did I add digits in the ones column? How did I add digits in the tens column? How did I add the digits in the hundreds column? How did you add digits in the ones column? How did you add the digits in the tens column? How did you add the digits in the hundreds column? 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  5. Importance Add(+) means to put together. • After we add, the answer is called the sum. • Adding numbers will help you add larger numbers. 2,431 + 6,214 8,645 2. Adding numbers will help you manage2 money. 2 make decisions about something David wants a gaming console that costs $220 and a bike that costs $249. How much will these cost altogether? 3. Adding numbers will help you do well on tests There are no CST questions released for adding numbers without regrouping. CFU Does anyone else have another reason why it is important to add numbers? (pair-share) Why is it important to add numbers? You may give me one of my reasons or one of your own. Which reason means the most to you? Why? 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only. 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  6. 6 8 7 9 9 cents 9 5 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  7. Independent Practice Name _____________________________ Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 3 0 5 5 0 9 7 4 5 9 0 7 4 0 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  8. Independent Practice (continued) Name _____________________________ Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 9 9 9 8 9 9 8 4 $ 7 5 minutes 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  9. Periodic Review 1 Name _____________________________ Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 7 9 6 0 0 6 9 6 9 0 6 9 0 6 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  10. Periodic Review 1 (continued) Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 9 9 7 7 8 8 3 9 2 8 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  11. Periodic Review 2 Name _____________________________ Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 5 9 7 0 9 0 9 0 7 9 5 0 9 7 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  12. Periodic Review 2 (continued) Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 9 6 6 5 7 5 5 5 7 8 minutes minutes 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  13. Periodic Review 3 Name _____________________________ Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 9 0 0 6 8 9 9 8 0 8 9 9 6 0 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

  14. Periodic Review 3 (continued) Add (+) means to put together. • After we add, the answer is called the sum. Add numbers. 8 6 9 6 9 8 3 8 5 $ 8 minutes 2nd Grade Math Number Sense 2.2 (4Q) Find the sum or difference of two whole numbers up to three digits long. Lesson to be used by EDI-trained teachers only.

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