| 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 | |
| What length (min) | 30 |
| What age group | Doesn't matter |
| 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 |
Addition and Subtraction of Fractions
Grades 4-5 (Ages 9-11)
Mathematics
30 minutes
20
This lesson aligns with the national curriculum by addressing the standards for understanding and applying operations with fractions.
| Step Number | Step Title | Length (minutes) | Details |
|---|---|---|---|
| 1 | Introduction | 5 | Briefly review what fractions are and explain the focus on addition and subtraction. |
| 2 | Interactive Activity | 10 | Provide each student with a printable card to fill in fractions they will add or subtract. |
| 3 | Guided Practice | 5 | Work through a few sample problems together on the whiteboard, involving the concept of adding and subtracting fractions. |
| 4 | Independent Practice | 5 | Students will practice on their own, using the worksheets provided for additional problems involving fractions. |
| 5 | Collecting Cards | 3 | Students will turn in their filled cards; randomly check a few during collection to assess participation and understanding. |
| 6 | Assigning Homework | 2 | Homework will be assigned related to the lesson without asking students to present it aloud. |
| 7 | Closing Remarks | 2 | Summarize the lesson and ask if there are any questions about adding or subtracting fractions. Review homework expectations. |
"Good morning, class! Today, we are going to dive into the world of fractions, specifically focusing on adding and subtracting them. Now, who can tell me what a fraction is? (Pause for responses) That's right! A fraction represents a part of a whole. Let's recall the different parts of a fraction: the top number is called the numerator, and the bottom number is called the denominator.
Today, our main focus will be on how we can add and subtract fractions when they have the same denominator. This is a very important skill in math. Are you ready to explore this? Let’s get started!"
"Now, I have a fun activity for us! I’m going to hand out these printable cards. Each card has some fractions that you will fill in. I want you to write two or three fractions on your card that have the same denominator. Remember, these could be any fractions you want.
Once you have your fractions written down, we will use them for our next activity. Raise your hand if you're ready for your card! (Distribute cards)
Take about two minutes to fill in your fractions. Don't forget to think about how you will later add or subtract them. Ready? Go!"
"All right, everyone! Now that we have our fractions written down, let’s gather around the whiteboard. I want to hear some of the fractions you've created. Who wants to share one? (Select students to share their fractions)
Great! Let’s take an example that I see on the board. If we have the fractions 2/5 and 1/5, how can we add those together? (Walk through the addition step by step)
Yes, we keep the same denominator and simply add the numerators. So, 2+1 equals 3. Therefore, 2/5 + 1/5 equals 3/5.
Now, what about subtraction? If we wanted to subtract 1/5 from 2/5, what would we do? (Guide students through the subtraction process) That's right! We keep the denominator the same and subtract the numerators. So 2 - 1 equals 1, making it 1/5.
Any questions so far? Let’s try another example with your own fractions!"
"Now it's your turn! I’ve handed out worksheets that have problems for you to practice on your own. Please work quietly on these problems for the next five minutes. Remember to apply what we've just learned about adding and subtracting fractions with like denominators.
If you have any questions, please raise your hand, and I will come around to help you. Start working now!"
"Time’s up, everyone! Please put your pencils down and pass your worksheets to the front. Now, I need everyone to take out those printable cards again.
I want you to turn in your cards with the fractions you created earlier. As I collect them, I’ll randomly check a few to ensure you all understand how to add and subtract fractions correctly.
Thank you! I appreciate your participation."
“As we wrap up today’s lesson, let’s talk about your homework. I would like you to complete a few additional problems involving adding and subtracting fractions from your math book.
Please make sure to show your work on each problem. I don't need any presentations on this, just bring it back to class tomorrow, and we’ll review it together.”
"Great job today, everyone! We achieved a lot in our lesson about adding and subtracting fractions. Who can remind me why it’s important to know how to add and subtract fractions? (Pause for responses) Exactly! It helps us in many real-life situations, like cooking or dividing things.
Are there any final questions about what we learned today? (Pause for questions)
Remember to complete your homework, and I look forward to seeing how you all did. Have a fantastic day!"
Define what a fraction is and identify its two main components.
If you have the fractions 3/8 and 4/8, what is the result of adding them together? Show your work.
Subtract the fraction 2/6 from 5/6. What is the answer?
Create your own fractions with the same denominator and show how you would add them together. Provide two examples.
Why is it important to have the same denominator when adding or subtracting fractions? Provide at least one real-life example where this skill might be necessary.
In a recipe, you need 1/3 cup of sugar and you want to add another 1/3 cup. How much sugar do you have in total?
You have 7/10 of a pizza and you eat 2/10 of it. How much pizza do you have left? Show your work.
Write a word problem that involves adding or subtracting fractions with like denominators. Solve the problem you created.
A fraction represents a part of a whole; it consists of a numerator (top number) and a denominator (bottom number).
3/8 + 4/8 = 7/8.
5/6 - 2/6 = 3/6, which simplifies to 1/2.
Example 1: 2/5 + 3/5 = 5/5 = 1. Example 2: 1/4 + 1/4 = 2/4 = 1/2.
It is important to have the same denominator to accurately add or subtract parts of a whole; for example, when sharing a pizza, knowing how much each person gets depends on this skill.
1/3 + 1/3 = 2/3 cup of sugar.
7/10 - 2/10 = 5/10, which simplifies to 1/2 pizza.
Example problem: If Lisa has 3/4 of a cake and gives away 1/4, how much cake does she have left? Answer: 3/4 - 1/4 = 2/4 = 1/2 cake left.
| Question | Answer |
|---------------------------------------------------------------------------|--------|
| What is a fraction? | |
| What are the parts of a fraction called? (Top number and bottom number) | |
| How do you add fractions with the same denominator? | |
| What do you do with the numerators when adding fractions with the same denominator? | |
| What is the sum of 2/5 and 1/5? | |
| How do you subtract fractions with the same denominator? | |
| What is the difference when subtracting 1/5 from 2/5? | |
| Why is it important to know how to add and subtract fractions? | |
| What should you do if you have questions while working on your worksheet? | |
| What did you learn in today's lesson about fractions? | |If you had to explain adding fractions to a friend who was absent today, what key points would you include?
Can you think of a real-life situation where you might need to add or subtract fractions? Share your example with the class.
If someone mistakenly said that you can always add fractions by just adding the denominators as well, how would you correct them?
Describe a game or activity that could help practice adding and subtracting fractions. What would the rules be?
Why do you think it's important to understand fractions, not just in math class but in everyday life?