| 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 | Subtracting |
| What length (min) | 30 |
| What age group | Year or Grade 3 |
| 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 |
Subtracting
Year/Grade 3
Mathematics
30 minutes
20
This lesson aligns with the Common Core State Standards for Mathematics, specifically focusing on operations and algebraic thinking.
| Step Number | Step Title | Length (minutes) | Details |
|---|---|---|---|
| 1 | Introduction | 5 | Introduce the topic of subtracting, explain its real-world application, and engage students with a few warm-up problems on the board. |
| 2 | Demonstration | 5 | Demonstrate subtraction through visual aids (e.g., counters or drawings) and model a couple of subtraction problems, explaining the steps clearly. |
| 3 | Activity: Printable Cards | 10 | Distribute printable cards to each student. Explain how they will use these cards to practice subtraction. Give students time to fill out the cards. |
| 4 | Independent Practice | 5 | Hand out worksheets with subtraction problems for students to complete independently while you circulate the room to assist as needed. |
| 5 | Check for Understanding | 5 | Randomly check a few students' filled-in cards to assess understanding without having them present in front of the class. |
| 6 | Homework Assignment | 5 | Assign subtraction homework for students to complete at home, review expectations, and explain that it will be checked in the next class. |
"Good morning, class! Today, we're diving into an exciting topic in mathematics: subtraction. Can anyone tell me what subtraction is? That’s right! Subtraction is the process of taking away. It’s something we do every day, like when we have 10 candies, and we give 3 candies to a friend. How many do we have left? Let’s think of a few more examples together. If you have 5 apples and you eat 2, how many apples do you have now? Excellent! You all are already thinking like mathematicians!”
"Now, let’s explore subtraction a bit deeper. I’ll show you a visual representation of subtraction using these counters. I have 8 counters here. If I take away 3 counters, how many do I have left? Let’s count them together. One, two, three, and there we go! We are left with 5 counters. So, we can write this as 8 - 3 = 5. Now, let’s do another example. This time, let’s try 6 - 2. Here are 6 counters. If I take away 2, can anyone tell me how many are left? That's right, 4! Great job! Remember, understanding the steps we just practiced will help you become confident in subtraction!"
"Now it’s your turn! I’m going to hand out some printable cards to each of you. On these cards, you’ll find subtraction problems that I want you to fill out. Use your knowledge from our demonstration to solve these problems. Take your time, and remember, if you have any questions or need help, just raise your hand. Go ahead and start filling out your cards. You have about 10 minutes to complete this activity."
"Time’s up for the cards! Now, let’s move on to some independent practice. I am handing out worksheets with several subtraction problems for you all to solve on your own. Remember to work quietly and check your work when you’re finished. If you have questions while working, don’t hesitate to raise your hand, and I’ll come around to help. You will have 5 minutes to complete these problems, so let’s get started!”
"Alright, everyone! I’d like to check your understanding of subtraction now. I will randomly call on a few of you to show me your filled-in cards. Don’t worry; this isn’t a test, just a way for me to see how you’re doing. As I call your name, please tell me one of the problems you solved and what the answer was. Great! I love how you all are sharing your thought processes. This is truly helping us learn together!”
“Now, as we wrap up our lesson, I would like to assign some homework. Your task is to complete a set of subtraction problems at home. Make sure you review what we learned today so you can be ready for our next class. I’ll collect these in our next session, so please don’t forget to bring them back! Is everyone clear on what to do? Great! I'm proud of the hard work you all put in today. Have a wonderful day, and I’ll see you next time!”
Solve the following subtraction problems:
Write a word problem that can be solved using subtraction, and then solve it. For example, "I had 8 balloons, and 3 flew away. How many do I have left?"
Use counters or small objects at home to show how subtraction works. If you have 10 counters and take away 4, how many do you have left? Draw a picture of your counters before and after the subtraction.
Fill in the blanks with the correct subtraction answer:
Explain in a few sentences why subtraction is an important skill in everyday life. Can you think of situations where you might use subtraction?
Challenge Problem: If a baker had 20 cookies and gave away 7, then baked 5 more, how many cookies does the baker have now? Show your work.
| Question | Answer |
|---|---|
| What is subtraction? | |
| If you have 10 candies and give away 3, how many do you have left? | |
| What is the equation for taking away 3 counters from 8 counters? | |
| After taking away 2 from 6 counters, how many are left? | |
| How does understanding subtraction help you in daily life? | |
| What are the steps to solve a subtraction problem? | |
| Can you give another example of a subtraction problem? | |
| Why is it important to check your work after solving problems? | |
| What should you do if you have a question while working on your cards? | |
| What will you be working on for homework? |