| 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 and subtraction |
| What length (min) | 45 |
| What age group | Year or Grade 4 |
| Class size | 30 |
| What curriculum | VC2M3A02 using partitioning to develop and record facts systematically (for example, ‘How many ways can 12 monkeys be spread among 2 trees?’, 12 = 12 + 0, 12 = 11 + 1, 12 = 10 + 2, 12 = 9 + 3, …), explaining how they know they have found all possible partitions VC2M4A01 demonstrating the commutative properties of addition using materials, diagrams and number lines; for example, using number lines to demonstrate that 5 + 2 = 2 + 5, and demonstrating that 2 + 2 + 3 = 7 and 2 + 3 + 2 = 7 and 3 + 2 + 2 = 7 |
| 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 |
Addition and Subtraction
Year/Grade 4
Mathematics
30
| Step Number | Step Title | Length (minutes) | Details |
|---|---|---|---|
| 1 | Introduction to Addition and Subtraction | 5 | Introduce the topic. Explain the importance and uses of addition and subtraction in everyday life. |
| 2 | Understanding Partitioning | 10 | Explain partitioning using an example. Demonstrate how 12 can be partitioned into different pairs on the board. |
| 3 | Group Activity | 15 | Divide students into groups of 5. Each group will create their own addition problems using partitioning with given numbers. |
| 4 | Demonstrating Commutative Properties | 10 | Use number lines to illustrate the commutative property of addition. Show examples and engage students in discussion. |
| 5 | Independent Practice | 5 | Provide worksheets for students to independently practice addition and subtraction problems. |
| 6 | Homework Review | 5 | Collect homework and review answers without any presentations; discuss common mistakes collectively. |
This lesson aims to develop students' understanding of addition and subtraction through engaging activities and collaborative work. By aligning with the national curriculum, the lesson ensures that students not only learn the mathematical concepts but also build skills in working with peers.
"Good morning, everyone! Today, we are going to dive into the wonderful world of addition and subtraction. Can anyone tell me where we use these two operations in our daily lives?"
(Allow time for students to respond.)
"Excellent examples! Addition and subtraction are crucial skills that help us solve problems every day, from shopping to sharing snacks. Let’s explore how we can use these skills effectively!"
"Now, let’s talk about a method called partitioning. Partitioning is when we break a number down into smaller parts to make addition or subtraction easier. For example, let’s take the number 12. How can we split 12 into different pairs?"
(Write on the whiteboard: 12 = 6 + 6, 7 + 5, 8 + 4, etc.)
"See how many ways we can find to make 12 by partitioning it? This is a very useful technique!"
"Now that we understand partitioning, it’s time for some fun! I’m going to divide you into groups of five. Each group will create your own addition problems using partitioning with the numbers I’ll give you."
(Assign numbers to each group—e.g., Group 1: 10, Group 2: 15, Group 3: 20, etc.)
"You will have 15 minutes to come up with as many pairs as you can and write them down on sticky notes. Remember, there are no wrong answers as long as you can show how you partition those numbers. Ready? Let’s get started!"
"Time’s up! Great job, everyone! Now, I want to show you something really interesting about addition called the commutative property. This means that you can add numbers in any order and still get the same result. Let’s use the number line to look at some examples."
(Use the whiteboard or projector to draw a number line and demonstrate: 3 + 2 = 5 and 2 + 3 = 5.)
"Can anyone share what they noticed about the answers when we changed the order of the numbers?"
(Encourage brief discussion among students.)
"Exactly! The sum is the same no matter how we arrange the numbers. This is a very powerful property!"
"Now, I would like each of you to practice independently. I’m handing out worksheets with addition and subtraction problems for you to complete on your own. Try to apply the techniques of partitioning and the commutative property we discussed today."
(Give students 5 minutes to work on their worksheets.)
"Let’s wrap up by quickly reviewing your homework. I want everyone to pull out their homework sheets. We won’t present them today; instead, I’ll collect them and check your answers for common mistakes."
(Collect homework and discuss key points, focusing on any typical errors.)
"Who found anything interesting or challenging about the problems you solved?"
(Allow for a few responses.)
"Thank you for sharing! This helps us learn together."
"Fantastic work today, everyone! We have explored addition and subtraction, learned about partitioning, and discovered the commutative properties. Remember to practice your homework for next time, and think about how you can use these skills in real life. See you all tomorrow!"