| Full lesson | Create for a teacher a set of content for giving a lesson, beginning with the lesson plan. Each new block of materials must begin with an H1 heading (other subheaders must be H2, H3, etc). When you describe required pictures, write those descriptions in curly brackets, for example: {A picture of a triangle} |
| Which subject | Mathematics |
| What topic | Addition with regrouping |
| What length (min) | 30 |
| What age group | Year or Grade 2 |
| Class size | 2 |
| What curriculum | HMH |
| Include full script | |
| Check previous homework | |
| Ask some students to presents their homework | |
| Add a physical break | |
| Add group activities | |
| Include homework | |
| Show correct answers | |
| Prepare slide templates | |
| Number of slides | 3 |
| Create fill-in cards for students | |
| Create creative backup tasks for unexpected moments |
Addition with Regrouping
Grade 2
Mathematics
2 students
HMH
| Step Number | Step Title | Length (minutes) | Details |
|---|---|---|---|
| 1 | Introduction | 5 | Introduce the topic of addition with regrouping. Briefly explain the need for regrouping. |
| 2 | Direct Instruction | 10 | Demonstrate addition with regrouping using base-ten blocks. Show examples on the whiteboard. |
| 3 | Guided Practice | 5 | Work through a few addition problems as a class, using the whiteboard to solve together. |
| 4 | Group Activity | 5 | Students will work together to solve a set of addition problems using base-ten blocks. |
| 5 | Independent Practice | 3 | Give each student a worksheet to complete individually. Monitor their work and provide support. |
| 6 | Homework Assignment | 2 | Assign homework that reinforces the lesson objectives. Explain that it will be checked but not presented in front of the class. |
| 7 | Closing | 5 | Review key concepts learned and answer any final questions. Summarize the importance of regrouping in addition. |
Students will be assessed based on their participation in discussions, accuracy in classwork and independence during the worksheet completion. Homework will be collected and checked for understanding.
"Good morning, class! Today, we are going to learn about a very important topic in math: addition with regrouping. Can anyone tell me what you think it means when we say 'regrouping'? That's right! It means that sometimes when we add numbers, we have to 'regroup' or carry over a number to the next place value. This helps us to add bigger numbers together correctly. Are you ready to dive in?"
"Let's start with some direct instruction. I have these base-ten blocks here, which will help us understand how to regroup.
[Show the base-ten blocks to the students.]
"Imagine we want to add the numbers 27 and 48. First, we will break these numbers down using our base-ten blocks. Who can tell me how many tens and ones are in 27? That’s right! There are 2 tens and 7 ones! And for 48, we have 4 tens and 8 ones.
[Draw this on the whiteboard.]
"Now, let’s add the ones first. So, 7 ones plus 8 ones gives us 15 ones. Since 15 is more than 10, we need to regroup. We take 10 ones and make 1 ten.
[Demonstrate this with the blocks.]
"Now, let’s add our tens together. We have 2 tens from 27, plus 4 tens from 48, and we just made 1 extra ten from regrouping. So that’s 2 + 4 + 1, which equals 7 tens.
"By putting that together, 27 + 48 equals 75. Great job, everyone! Now we have a clear understanding of how to add with regrouping."
"Now it’s your turn to help me out. Let’s solve a few addition problems together on the whiteboard. I’ll write down another problem: 36 + 47.
[Write the problem on the board.]
"Okay, how many ones do we have? Yes, 6 and 7 make 13. What do we do with the 13? That’s right! We regroup it. How many tens do we end up with? Exactly! So now let’s add the tens. 3 plus 4 plus 1 equals…? Correct! 8 tens! So what is 36 + 47? Yes, it equals 83! Well done, class!"
"Great job with the guided practice! Now, we’re going to work together on a small group activity. I want each pair to use the base-ten blocks to solve these addition problems on this sheet.
[Distribute the set of addition problems.]
"Remember to think about regrouping when you need to carry over a number. Work together, share your thoughts, and help each other out. I’ll walk around to help if you need it. Let’s get started!"
"Okay, it’s time for some independent practice. I’m going to hand each of you a worksheet with some addition problems. Please complete this on your own.
[Distribute worksheets.]
"I’ll be walking around to see how everyone is doing, so raise your hand if you need help. Remember to think about what we learned about regrouping! You have just a few minutes to complete this. Go ahead!"
"Now that we’ve practiced a lot today, I have a short homework assignment for you. You’ll be taking home a sheet with similar addition problems that involve regrouping.
[Hand out the homework assignment sheets.]
"This will help reinforce what we learned today. Make sure to do your best! I will check it the next time we meet, but don’t worry, you won’t have to present it in front of the class. You can do it at home."
"To wrap up today’s lesson, let’s quickly review what we learned. Who can tell me why regrouping is important in addition? Yes! It helps us add correctly when we are working with larger numbers.
"Does anyone have any final questions about addition with regrouping? Remember that it’s all about making sure we understand the place value of our numbers. Thank you for your hard work today, everyone! You did a fantastic job!"
| Slide Number | Image | Slide Content |
|---|---|---|
| 1 | {Image: A teacher speaking to a classroom} | - Introduction to addition with regrouping - Definition of regrouping: carrying over to the next place value - Importance of regrouping in adding larger numbers |
| 2 | {Image: Base-ten blocks on a table} | - Demonstration with base-ten blocks - Example: Adding 27 (2 tens, 7 ones) and 48 (4 tens, 8 ones) - Step 1: Add ones (7 + 8 = 15, regroup 10 to make 1 ten) - Step 2: Add tens (2 + 4 + 1 = 7) - Final sum: 27 + 48 = 75 |
| 3 | {Image: Students working in pairs with math problems} | - Guided practice with addition problem (36 + 47) - Adding ones (6 + 7 = 13, regroup to 1 ten) - Adding tens (3 + 4 + 1 = 8) - Final answer: 36 + 47 = 83 - Group activity and independent practice instructions |
What does it mean to "regroup" when adding numbers?
Solve the following addition problem using regrouping:
58 + 27 = ?
Explain the process of regrouping using the numbers 34 and 29. How do you break down the addition of the ones and tens?
Complete the addition problem and show your work:
76 + 48 = ?
How many tens and ones do the numbers 85 and 39 have? Add these numbers using regrouping.
After performing the addition 54 + 38, what is the total? Describe how you worked through the regrouping.
Create your own addition problem using two numbers greater than 50 that requires regrouping. Show the steps to solve it.
Why is it important to understand place value when adding larger numbers? Provide a brief explanation.
Solve the following addition problem, being sure to show how you would regroup:
91 + 47 = ?
Reflect on what strategies worked best for you when learning about addition with regrouping. What would you do differently next time?