| 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 | Vertical addition subtraction |
| What length (min) | 30 |
| What age group | Year or Grade 2 |
| Class size | 20 |
| What curriculum | |
| 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 | 5 |
| Create fill-in cards for students | |
| Create creative backup tasks for unexpected moments |
Vertical Addition/Subtraction
Year 2
Mathematics
30 minutes
20 students
This lesson corresponds to the Australian National Curriculum for Foundation to Year 2: Number and Algebra, focusing on addition and subtraction strategies.
| Step Number | Step Title | Length | Details |
|---|---|---|---|
| 1 | Introduction | 5 minutes | Briefly introduce vertical addition and subtraction concepts. Use examples on the whiteboard to show how to set up the problems vertically. |
| 2 | Demonstration | 5 minutes | Demonstrate a few examples on the board, solving them step-by-step. Engage students in the process by asking guiding questions. |
| 3 | Pair Work with Cards | 10 minutes | Distribute printable cards to each student. Allow them to work in pairs to fill in the cards with vertical addition/subtraction problems and solve them. |
| 4 | Random Checking | 5 minutes | As students complete their cards, circulate the room to randomly check students' work and provide immediate feedback without asking for individual presentations. |
| 5 | Class Discussion | 3 minutes | Conclude with a brief discussion about the common challenges faced during the activity, highlighting successful strategies. |
| 6 | Homework Assignment | 2 minutes | Assign homework based on the day’s lesson without presenting specific tasks in class. Explain the importance of practice for mastery. |
End the lesson by reminding students of the importance of vertical addition and subtraction in daily life. Encourage them to practice at home with the assigned homework.
"Good morning, everyone! Today, we are going to explore a very interesting topic in mathematics: vertical addition and subtraction. Does anyone know what it means to add or subtract numbers vertically? [Pause for a few responses]
"Great! When we write numbers one on top of the other, it makes it easier to solve them. Let's take a look at the whiteboard. Here, I have an example of a vertical addition problem:
23
+ 14
-----"Can anyone tell me what the first step is? [Wait for answers] Yes! We start by adding the numbers in the ones column. In this case, 3 plus 4 equals...? [Wait for responses] Correct! It equals 7. Then we move to the tens column. Who can tell me what 2 plus 1 equals? [Wait for responses] Exactly, 3! So our answer is 37."
"Now, I'll write one subtraction example for us to solve together:
45
- 23
-----"Let's follow the same steps we just used for addition, but this time we're going to be subtracting. Who can tell me what to do first? [Wait for responses] Yes! We start with the ones column. What is 5 minus 3? [Wait for answers] Correct, it’s 2. Now for the tens column, what is 4 minus 2? [Wait for answers] That's right, it's 2. So our final answer is 22."
"Before we move on, does anyone have any questions about how we set these types of problems up? [Pause for a moment] Alright, let’s practice this together in pairs!"
"Now it's time for some hands-on practice! I’m going to give each of you a printable card. On this card, you will need to create a vertical addition or subtraction problem. Work with your partner to fill in the card with numbers, and then solve the problems together.
"Remember, you can use the steps we just discussed. You have 10 minutes to complete this activity! Ready? Go!"
"Time’s up! As you finish up your cards, I’m going to walk around and check your work. I want to see how you’ve organized your problems and what answers you’ve come up with.
"Please don't present your work just yet; I want to give you feedback privately. [Walk around and engage with students] This is great work! I love how you’ve lined up your numbers! Keep it going!"
"Alright, everyone, let’s come back together. I want to hear about your experience. What were some of the challenges you faced while working on your problems? [Listen to responses] Thank you for sharing!
"I think many of you noticed that organizing your numbers properly made a big difference in solving your problems. This is a key strategy as you work on vertical addition and subtraction. Does anyone have a successful strategy they used that they’d like to share? [Pause for answers] Fantastic!"
"For your homework tonight, I want you to practice vertical addition and subtraction. Please remember that practice is important for mastering these skills!
"When you’re at home, try to come up with your own problems, or you could even use examples from your math books. If you have questions, remember, I am here to help!
"Great job today, everyone! I’ll see you all next lesson. Let’s keep practicing!"
Create three vertical addition problems using the following criteria:
Solve the addition problems you created above and show your work.
Create three vertical subtraction problems using the following criteria:
Solve the subtraction problems you created above and show your work.
Reflect on your learning:
Choose one addition and one subtraction problem from your homework to explain to a family member. Write down their response to your explanation.
Find an example of vertical addition or subtraction from your math textbook or homework. Write it down and solve it, showing your steps clearly.
| Question | Answer |
|---|---|
| What does it mean to add or subtract numbers vertically? | |
| In a vertical addition problem, what is the first step? | |
| What do you get when you add the numbers in the ones column of the example 23 + 14? | |
| What is the sum of the numbers in the tens column for the example 23 + 14? | |
| In a vertical subtraction problem, what is the first step? | |
| What is 5 minus 3 in the subtraction example 45 - 23? | |
| What do you get when you subtract the numbers in the tens column of the example 45 - 23? | |
| Why is it important to organize numbers properly when solving vertical addition and subtraction problems? | |
| Can anyone share a successful strategy they used while solving their vertical addition or subtraction problems? | |
| What types of problems should you practice for your homework on vertical addition and subtraction? |