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Welcome to Addition! – Learn a fun way to add numbers – Use doubles to add three numbers – If you know 2 + 2, then 2 + 2 + 1 is just one more! – Become an addition whiz! – Practice makes perfect in becoming a math superstar. | This slide is designed to introduce first graders to the concept of using doubles to add three numbers, a strategy that simplifies the addition process. Start by engaging them with the idea that addition can be fun and approachable. Explain that knowing doubles (like 2+2) can help them easily add another number (like 2+2+1). Encourage the students to use their knowledge of doubles to solve addition problems up to 20. By the end of the lesson, aim to have the students feel confident in their addition skills. To reinforce the concept, consider incorporating hands-on activities such as using counters or drawing illustrations that represent doubles and near-doubles.

Understanding Doubles in Addition – What are doubles in math? – Doubles are pairs of the same number added together, like 2+2. – Examples of doubles – Can you think of a double? Like 4+4 or 5+5! – Doubles make addition quick – Knowing doubles, we can add numbers like 6+6 faster. – Using doubles to add three numbers | This slide introduces the concept of doubles in addition, which is a foundational strategy for first graders learning to add numbers up to 20. Start by explaining what doubles are and how they are simply two of the same number added together. Ask the class for examples to ensure understanding and engagement. Emphasize that memorizing doubles can significantly speed up their addition skills. Finally, demonstrate how knowing doubles can help when adding three numbers, where one of the pairs is a double. For instance, 5+5+6 can be quickly solved by first adding the double (5+5=10) and then adding the remaining number (10+6=16). Encourage students to practice this strategy with different sets of numbers.

Adding Three Numbers Using Doubles – Start with three numbers – Find a double first – Doubles are two same numbers, like 2 + 2 – Add the double to the third number – After finding a double, add it to the remaining number, e.g., 4 (from 2 + 2) + 3 = 7 – Practice with different numbers – Try 1 + 1 + 5 or 3 + 3 + 4 and use doubles to add | This slide introduces first graders to the concept of adding three numbers by identifying and using doubles to simplify the process. Start by explaining that sometimes we need to add three numbers together and it can be made easier by finding doubles, which are two of the same numbers. Show them how to spot the double and then add that sum to the third number. For example, in 2 + 3 + 2, we can add 2 + 2 to make 4, and then add the 3 to get 7. Encourage the students to practice this strategy with different sets of numbers to become comfortable with the concept. This method helps to quickly identify sums up to 20 and reinforces the understanding of addition.

Using Doubles to Add Three Numbers – Find a double in the numbers – Add the double numbers first – If we have 2, 2, and 5, we add 2 + 2 first – Then add the third number – After finding 2 + 2 = 4, we add the 5 to get 4 + 5 = 9 – This strategy simplifies addition | This slide introduces the concept of using doubles to add three numbers, a strategy that can make addition easier for first graders. Start by explaining what a double is (the same number added to itself) and how to spot it within a set of three numbers. Demonstrate the process with an example, such as adding 2, 2, and 5. Show that by adding the double (2 + 2) first, we get 4, and then it’s simpler to add the third number (4 + 5) to reach the total of 9. Encourage the students to practice this strategy with different sets of numbers and reassure them that this method can make addition faster and more fun. Provide several examples and allow the students to try it themselves with hands-on activities.

Let’s Practice Together: Adding with Doubles – Start with an example: 4 + 4 + 1 – First, find the double: 4 + 4 – Doubling 4 gives us 8 – Then, add the last number: 8 + 1 – Adding 1 to our double, 8, we get 9 – Our total sum is 9! | This slide is designed to teach first graders how to add three numbers by using doubles. Start by showing them the example 4 + 4 + 1. Explain that adding the double (4 + 4) is easier because they are the same number. Once they’ve found the sum of the double (8), they can easily add the last number (1) to find the total sum (9). Encourage the students to look for doubles in their addition problems as a strategy to make adding easier. During the class, work through several examples together and then let the students try some on their own or in pairs. Possible activities could include using physical objects like counters or drawing pictures to visualize the doubles and the additional number.

Your Turn to Try: Adding with Doubles – Find and add the doubles – Then add the third number – Solve the given problems – Use the practice problems to apply what you’ve learned about doubles – We’ll review the answers together – Sharing our solutions helps us learn from each other | This slide is designed to encourage active participation from the students in applying the concept of adding doubles plus one more number. Provide a set of problems that involve adding doubles first, which is a familiar strategy for them, and then adding a third number. This reinforces their understanding of addition strategies up to 20. After the students work on the problems independently, bring the class together to review the answers. This collaborative approach allows students to learn from each other and clarifies any misunderstandings. Make sure to praise their efforts and provide guidance where needed.

Class Activity: Addition Bingo with Doubles – Play Addition Bingo today – Solve doubles addition problems – Example: 4 + 4 + 3. Double is 4 + 4 = 8, then add 3. – Mark the correct square on Bingo – Aim for five in a row to win | This interactive class activity is designed to help first graders practice and reinforce their addition skills, specifically focusing on the strategy of using doubles. Prepare a Bingo game card for each student with different sums up to 20. As you call out addition problems involving doubles, students will solve them and mark their Bingo cards if they have the sum. The goal is to get five correct sums in a row. This game encourages quick mental addition and helps students recognize patterns in numbers. Possible variations of the activity could include using different Bingo patterns, such as ‘four corners’ or ‘full house’, to keep the game engaging and challenging.

Great Work on Adding with Doubles! – Proud of your adding skills – Practice adding at home too – Try adding numbers using toys or snacks – More fun with addition ahead – Keep up the good work! – Remember, the more you practice, the better you get! | This slide is meant to congratulate the students on their hard work and encourage them to continue practicing their new skills at home. It’s important to reinforce the idea that practice is key to mastering addition. Suggest to parents to help their children find fun ways to incorporate adding into daily activities, like counting toys during cleanup or adding up pieces of fruit during snack time. Let the students know that their efforts are appreciated and that there’s more excitement to come with another addition strategy in the next lesson. This positive reinforcement helps build their confidence and excitement for learning math.