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Welcome to Addition! – Learn to add with numbers – Add ten to two-digit numbers – Example: 10 + 23 = ? – Making addition fun – Use games and visuals – Easy steps for adding – Break down the process | This slide introduces first graders to the concept of addition, specifically focusing on adding multiples of ten to two-digit numbers. Start by engaging the students with the idea that addition is a fun and essential part of math. Demonstrate with simple examples, such as adding 10 to a two-digit number, and use visual aids like number lines or counters to help them understand. Incorporate fun activities or games to reinforce the concept. Break down the steps of addition for them, showing how to add the tens first and then the ones, making the process easy to grasp. Encourage the students to practice with different numbers and provide immediate feedback to solidify their understanding.

Adding Two-Digit Numbers and Multiples of Ten – What are two-digit numbers? – Numbers with two digits, like 12, 34, 56 – Multiples of ten explained – Numbers like 10, 20, 30, where 10 is repeated – Place value in numbers – Each digit has a value based on its position – Adding numbers together | This slide introduces first graders to the concept of two-digit numbers and multiples of ten, which are foundational for understanding addition at this level. Begin by explaining that two-digit numbers are made up of tens and ones. Use visual aids like blocks or drawings to show examples of two-digit numbers. Then, describe multiples of ten as numbers that can be counted by tens. Illustrate this with a number line or counters. Emphasize the place value by showing that in a two-digit number, one digit represents the number of tens and the other represents the number of ones. Conclude by demonstrating how to add a two-digit number and a multiple of ten, starting with the tens and then adding the ones. Encourage students to practice with simple examples and use manipulatives to aid their understanding.

Adding with Blocks: Visual Math – Use blocks for numbers – ‘Ten blocks’ for multiples of 10 – Like 10, 20, 30… each block is a ‘ten’ – ‘One blocks’ for single units – Individual blocks represent 1, 2, 3… – Practice adding with blocks – Combine ‘ten blocks’ and ‘one blocks’ to add | This slide introduces a hands-on activity for first graders to understand addition with the help of physical blocks. ‘Ten blocks’ are used to represent multiples of ten, which simplifies the concept of adding tens to a two-digit number. ‘One blocks’ represent single units from 1 to 9. During the activity, students will use these blocks to visually and tangibly add a multiple of ten to a two-digit number. For example, to add 30 (three ‘ten blocks’) to 47 (four ‘ten blocks’ and seven ‘one blocks’), students will combine the blocks and count them to find the result. This method reinforces the concept of place value and helps students visualize the addition process. Teachers should prepare different sets of ‘ten blocks’ and ‘one blocks’ for the activity and guide students through several examples, ensuring they understand how to group and count the blocks to find the sum.

Let’s Add Together! – Start with a two-digit number – Example: Begin with 23 – Add a multiple of ten – Example: Add 10 to 23 – Visualize with blocks – Use blocks to combine 23 and 10 – Find the total sum – Count blocks to see total is 33 | This slide introduces first graders to the concept of adding a multiple of ten to a two-digit number. Begin by explaining what a two-digit number is, using 23 as an example. Then, show how to add a multiple of ten, such as 10, to this number. Use visual aids like blocks to help students combine the two numbers, reinforcing the concept that when adding a multiple of ten, only the tens place changes. Have students practice with different two-digit numbers and multiples of ten, and encourage them to use blocks or drawings to find the total sum. This hands-on approach will help solidify their understanding of basic addition involving tens.

Adding Multiples of Ten – Add 23 and 10 together – What is 23 plus one ‘ten block’? – Add 35 and 20 together – What is 35 plus two ‘ten blocks’? – Count ‘ten blocks’ first – ‘Ten blocks’ help us add easily – Write your answers down | This slide is for a practice activity to help students understand the concept of adding multiples of ten to two-digit numbers. Start by explaining that a ‘ten block’ is a group of ten units. Show them how to count the ‘ten blocks’ first when adding, as it simplifies the process. For example, with 23 + 10, they should see it as 23 + one ‘ten block’, making it 33. Similarly, for 35 + 20, they should add two ‘ten blocks’ to 35, resulting in 55. Encourage the students to visualize the ‘ten blocks’ as they add and to write down their answers. This visual approach will help solidify their understanding of place value and addition. Provide guidance and ensure they are comfortable with the concept before moving on to more complex problems.

Adding Without Blocks – Write the two-digit number – Write the multiple of ten below it – Start adding from the right side – If you have 25 + 30, you add 5 + 0 first – Add the tens and ones separately – Then add 20 + 30 to find the total sum | This slide is aimed at teaching first graders how to add a two-digit number and a multiple of ten without using physical blocks or other counting aids. Start by having them write the two-digit number. Below it, they should write the multiple of ten they are adding. Emphasize starting the addition process from the rightmost digits, which are the ones. This is important because it lays the foundation for understanding place value and will help when they move on to more complex addition. After adding the ones, they should then add the tens. For example, if the problem is 25 + 30, they add 5 (from 25) and 0 (from 30) to get 5, then add 20 (from 25) and 30 to get 50, and finally combine those to find the total sum of 55. Encourage students to practice with different numbers and provide several examples for them to work through.

Group Activity: Addition Race – Pair up for solving problems – Use blocks or drawings – Visual aids help understand addition – First to finish wins a prize – A fun sticker for the winners! – Practice makes perfect! | This activity is designed to make learning addition fun and interactive. Split the class into pairs and provide them with a set of addition problems that involve adding a multiple of ten to a two-digit number. Encourage them to use blocks or draw tens and ones to visualize the problems, which reinforces the concept of place value. The competitive element of racing to finish first will keep them engaged, and the reward of a sticker will serve as motivation. Make sure to walk around the classroom to assist and ensure that students are solving the problems correctly. After the activity, discuss the different strategies students used to solve the problems. This will help them learn from each other and understand that there can be multiple ways to arrive at the correct answer.

Great Work on Addition! – Celebrate your adding skills – Practice leads to perfection – Continue practicing at home – Try adding with toys or snacks – Share your learning with family – Teach a family member how to add | This slide is meant to congratulate the students on their hard work during the lesson on adding multiples of ten to two-digit numbers. Emphasize the importance of practice in mastering math skills. Encourage them to continue practicing at home, perhaps by using everyday items like toys or snacks to make learning fun and interactive. Suggest that they involve their family members in their practice by teaching them what they’ve learned, which reinforces their understanding and builds their confidence in the subject.