Warm Up
Fraction Frenzy Starter
Take 3 minutes to complete these quick questions!
- Draw a picture to represent the fraction 3/4.
- What does the numerator tell us?
- What does the denominator tell us?
- Is 2/5 a proper or improper fraction? How do you know?
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Lesson Plan
Fraction Fiesta
Students will increase their ability to convert between mixed numbers and improper fractions, add and subtract mixed numbers with like denominators, and solve problems involving the addition of like fractions.
Mastering fractions is a fundamental skill that underpins many higher-level math concepts. This lesson helps students build a strong foundation, enabling them to confidently tackle more complex problems in algebra and beyond, and to apply these skills in everyday life scenarios like cooking or measuring.
Audience
8th Grade Students (below grade level)
Time
20 minutes
Approach
Through direct instruction, interactive activities, and a fun game, students will practice fraction operations.
Prep
Teacher Preparation
10 minutes
- Review all generated materials: Fraction Fiesta Lesson Plan, Fraction Fiesta Slide Deck, Fraction Frenzy Starter, Mixed Number Maneuver Worksheet, Fraction Action Activity, Fraction Face-Off Game, and Answer Key for Fractions.
- Print copies of the Mixed Number Maneuver Worksheet for each student.
- Prepare materials for the Fraction Action Activity (if using physical manipulatives) or ensure the digital version is ready.
- Have whiteboards or scratch paper available for the Fraction Face-Off Game.
Step 1
Warm Up: Fraction Frenzy Starter
3 minutes
- Distribute the Fraction Frenzy Starter.
- Instruct students to complete the warm-up independently. Discuss answers briefly as a class to activate prior knowledge.
Step 2
Introduction & Instruction: Mixed Numbers & Improper Fractions
7 minutes
- Use the Fraction Fiesta Slide Deck and the Fraction Fiesta Script to guide students through the conversion of mixed numbers to improper fractions and vice versa.
- Explain the process of adding and subtracting mixed numbers with like denominators. Provide clear examples.
- Emphasize the 'why' behind each step.
Step 3
Guided Practice: Mixed Number Maneuver Worksheet
5 minutes
- Distribute the Mixed Number Maneuver Worksheet.
- Have students work through a few problems on the worksheet independently or in pairs.
- Circulate to provide support and address misconceptions. Review answers using the Answer Key for Fractions.
Step 4
Activity/Game: Fraction Face-Off
5 minutes
- Introduce the Fraction Face-Off Game.
- Divide students into small groups or pairs.
- Facilitate the game, encouraging students to apply their new skills in a fun, competitive environment.
- Conclude the game and briefly discuss strategies.
Slide Deck
Welcome to Fraction Fiesta!
Today, we're going on an adventure with fractions!
Get ready to:
- Convert between mixed numbers and improper fractions.
- Add and subtract mixed numbers with the same denominators.
- Solve real-world fraction problems!
Welcome students and introduce the day's topic. Explain that fractions are everywhere!
Warm-Up: Fraction Frenzy Starter
Let's get our brains warmed up with some quick fraction questions!
- Question 1: Draw a picture for 3/4.
- Question 2: What's the numerator's job?
- Question 3: What's the denominator's job?
- Question 4: Proper or improper: 2/5? Why?
Guide students through the warm-up, allowing them to complete it independently before discussing answers as a class. Reinforce prior knowledge.
Mixed Up or Improper?
What are Mixed Numbers?
- A whole number and a fraction (e.g., 1 ½, 3 ¾)
What are Improper Fractions?
- The numerator is larger than or equal to the denominator (e.g., 3/2, 7/4)
They represent the same amount!
Introduce mixed numbers and improper fractions. Explain that they represent the same amount, just in different ways. Use a simple example like pizza slices.
Mixed to Improper: The Dance Steps
How to Convert a Mixed Number to an Improper Fraction:
- Multiply the whole number by the denominator.
- Add that product to the numerator.
- Keep the same denominator.
Example: Convert 2 1/3
- 2 x 3 = 6
- 6 + 1 = 7
- Result: 7/3
Demonstrate the step-by-step process of converting a mixed number to an improper fraction. Provide a clear example and work through it with the class.
Improper to Mixed: Unscrambling!
How to Convert an Improper Fraction to a Mixed Number:
- Divide the numerator by the denominator.
- The quotient is your new whole number.
- The remainder is your new numerator.
- The denominator stays the same.
Example: Convert 7/3
- 7 ÷ 3 = 2 with a remainder of 1
- Result: 2 1/3
Demonstrate the reverse process: converting an improper fraction to a mixed number. Again, provide a clear example and work through it.
Adding Mixed Numbers (Like Denominators)
Steps:
- Add the fractions.
- Add the whole numbers.
- If your new fraction is improper, convert it to a mixed number and add the whole part to your existing whole number.
- Simplify if needed.
Example: 1 1/4 + 2 2/4
- (1/4 + 2/4) = 3/4
- (1 + 2) = 3
- Result: 3 3/4
Introduce adding mixed numbers with like denominators. Emphasize adding fractions first, then whole numbers, and finally simplifying if necessary. Discuss how to handle improper fractions that result from addition.
Subtracting Mixed Numbers (Like Denominators)
Steps:
- Subtract the fractions.
- If the first fraction is smaller, borrow 1 from the whole number and convert it into a fraction (e.g., 1 = 4/4).
- Subtract the whole numbers.
- Simplify if needed.
Example: 3 3/5 - 1 1/5
- (3/5 - 1/5) = 2/5
- (3 - 1) = 2
- Result: 2 2/5
Introduce subtracting mixed numbers with like denominators. Highlight the importance of borrowing if the first fraction is smaller than the second. Walk through an example clearly.
Your Turn! Practice Time!
Let's put what we've learned into practice!
Work on the Mixed Number Maneuver Worksheet to solidify your skills.
Don't be afraid to ask questions or work with a partner!
Transition to the worksheet for guided practice. Encourage students to ask questions and work together.
Game On: Fraction Face-Off!
Time for a challenge!
Get ready to play Fraction Face-Off and show off your fraction prowess!
Introduce the game as a fun way to apply their skills. Explain the rules clearly and ensure everyone understands before starting.
Fraction Fantastic!
Great job today, fraction adventurers!
You've mastered:
- Converting mixed numbers and improper fractions.
- Adding and subtracting mixed numbers with like denominators.
Keep practicing! Fractions are everywhere!
Conclude the lesson by reviewing the key concepts and encouraging continued practice. Remind students of the importance of these skills.
Script
Fraction Fiesta! Teacher Script
Slide 1: Welcome to Fraction Fiesta!
"Good morning, class! Today, we're embarking on a super important and fun math adventure: Fraction Fiesta! By the end of this lesson, you'll be fraction pros. We're going to learn how to change fractions from one form to another, add and subtract them, and even solve some real-world fraction puzzles. Get ready to power up your math skills!"
Slide 2: Warm-Up: Fraction Frenzy Starter
"To get our brains ready, let's start with a quick 'Fraction Frenzy Starter.' I've handed out a short warm-up activity. Take about three minutes to answer these questions on your own. Don't worry if you don't remember everything; this is just to get us thinking."
(Allow 3 minutes for students to complete the warm-up.)
"Alright, let's quickly go over these. Who can share their drawing for 3/4? What does the numerator tell us? And the denominator? How do you know if 2/5 is proper or improper? Excellent! It's important to remember these basics as we dive deeper."
Slide 3: Mixed Up or Improper?
"Today, we're going to talk about two special types of fractions: mixed numbers and improper fractions. Can anyone tell me what a mixed number looks like? Yes, it's a whole number and a fraction, like 1 ½ or 3 ¾. And an improper fraction? That's right, it's when the top number, the numerator, is bigger than or equal to the bottom number, the denominator, like 3/2 or 7/4.
Here's the cool part: they represent the same amount! Think of it like this: a whole pizza cut into 4 slices. If you have 1 whole pizza and 1 extra slice, that's 1 ¼. But it's also 5/4 slices total! We're just going to learn how to switch between these two ways of seeing fractions."
Slide 4: Mixed to Improper: The Dance Steps
"First up, let's learn how to convert a mixed number into an improper fraction. Think of it as a little dance! There are three simple steps:
- Multiply the whole number by the denominator.
- Add that product to the numerator.
- Keep the same denominator.
Let's try an example together: 2 1/3. Our whole number is 2, and our denominator is 3. So, we multiply 2 by 3, which gives us 6. Then, we add that 6 to our numerator, 1, which makes 7. Our denominator stays the same, 3. So, 2 1/3 becomes 7/3! It's like having two full pizzas cut into 3 slices each, plus one more slice. That's 7 slices total, each 1/3 of a pizza."
(Write the example on the board or show on screen, working through each step.)
"Any questions about these steps? Practice makes perfect!"
Slide 5: Improper to Mixed: Unscrambling!
"Now, let's learn how to go the other way – converting an improper fraction back to a mixed number. This is like 'unscrambling' it!
- Divide the numerator by the denominator.
- The quotient (the answer to your division problem) is your new whole number.
- The remainder (what's left over) is your new numerator.
- The denominator stays the same.
Let's use our previous example: 7/3. We divide 7 by 3. How many times does 3 go into 7? Twice! So, 2 is our whole number. What's left over? 7 minus (3 times 2, which is 6) leaves us with 1. So, 1 is our new numerator. And our denominator stays 3. So, 7/3 becomes 2 1/3! See how we came full circle?"
(Write the example on the board or show on screen, working through each step.)
"Remember, improper fractions and mixed numbers are just different ways to write the same value. Being able to convert between them is a super useful skill!"
Slide 6: Adding Mixed Numbers (Like Denominators)
"Now that we're masters of converting, let's talk about adding mixed numbers, specifically when they have the same denominators. It's pretty straightforward:
- First, add the fractions.
- Then, add the whole numbers.
- If your new fraction part ends up being an improper fraction, you need to convert it to a mixed number and add that whole part to your existing whole number.
- Finally, always check if you can simplify your answer.
Let's look at an example: 1 1/4 + 2 2/4. We add the fractions first: 1/4 + 2/4 equals 3/4. Then, we add the whole numbers: 1 + 2 equals 3. Put them together, and you get 3 3/4! Since 3/4 is a proper fraction and can't be simplified, we're done."
(Work through the example on the board.)
"What if we added 1 3/4 + 2 3/4? We'd get 3 and 6/4. Now 6/4 is improper, so we convert it to 1 2/4. Then we add that 1 to our whole number 3, making it 4 2/4. And finally, simplify 2/4 to 1/2. So the answer is 4 1/2! Always remember that extra step if your fraction becomes improper!"
Slide 7: Subtracting Mixed Numbers (Like Denominators)
"Subtracting mixed numbers with like denominators is very similar, but sometimes it has a little twist:
- First, subtract the fractions. This is where the twist comes in: If the first fraction is smaller than the second, you'll need to 'borrow' 1 from the whole number and convert it into a fraction. For example, if you need to subtract 3/5 from 1/5, you'd take 1 from your whole number (say, a 3 becomes a 2), and that borrowed 1 becomes 5/5, which you add to your 1/5, making it 6/5. Now you can subtract!
- Then, subtract the whole numbers.
- And, of course, simplify if needed.
Let's try: 3 3/5 - 1 1/5. First, subtract the fractions: 3/5 - 1/5 gives us 2/5. Then, subtract the whole numbers: 3 - 1 gives us 2. So, our answer is 2 2/5. No borrowing needed here, nice and easy!"
(Work through the example on the board. Briefly discuss an example where borrowing would be necessary, like 3 1/5 - 1 3/5, but don't work through it completely to save time.)
Slide 8: Your Turn! Practice Time!
"Now it's time for you to practice what you've learned! I'm handing out the Mixed Number Maneuver Worksheet. You can work on this independently or with a partner. Remember to convert, add, and subtract carefully. I'll be walking around to help and answer any questions you might have."
(Circulate, providing support and checking understanding. After a few minutes, bring the class back together to briefly review some answers using the Answer Key for Fractions.)
Slide 9: Game On: Fraction Face-Off!
"Great work on the worksheet! Now for some friendly competition! We're going to play Fraction Face-Off. I'll explain the rules in a moment, but the goal is to use your new fraction skills to win!"
(Explain the rules of the game clearly. Divide students into groups or pairs and facilitate the game for the remaining time.)
Slide 10: Fraction Fantastic!
"Wow, you all did a fantastic job today at our Fraction Fiesta! Give yourselves a pat on the back.
Today, you've become experts at:
- Converting between those tricky mixed numbers and improper fractions.
- Adding and subtracting mixed numbers with like denominators.
These are huge skills that will help you in so many areas of math. Keep practicing them, because fractions really are fantastic and they're all around us! Any final questions or 'aha!' moments you want to share?"
(End with positive reinforcement and answer any final student questions.)
Worksheet
Mixed Number Maneuver Worksheet
Part 1: Convert Mixed Numbers to Improper Fractions
Convert each mixed number to an improper fraction.
- 1 1/2
- 3 2/3
- 2 3/4
- 5 1/6
Part 2: Convert Improper Fractions to Mixed Numbers
Convert each improper fraction to a mixed number.
- 7/3
- 9/4
- 11/5
- 10/3
Part 3: Add and Subtract Mixed Numbers (Like Denominators)
Solve each problem. Remember to show your work!
- 2 1/5 + 1 2/5
- 4 3/8 + 2 1/8
- 3 5/6 - 1 2/6
- 5 3/4 - 2 1/4
Part 4: Solve It!
Read the problem and solve. Show your work!
- Naima drank 1 1/3 cups of water in the morning and 2 1/3 cups of water in the afternoon. How much water did she drink in total?
Activity
Fraction Action! Visualizing Fractions
This activity helps you visualize and understand mixed numbers and improper fractions, and how they combine.
Part 1: Drawing Conversions
For each problem below, draw a visual representation (like pizzas, candy bars, or circles) to show the conversion.
-
Show 1 3/4 as an improper fraction. Draw it out!
-
Show 8/3 as a mixed number. Draw it out!
Part 2: Adding with Pictures
Draw pictures to help you solve these addition problems. Show both the original mixed numbers and their sum.
-
1 1/2 + 1 1/2
-
2 1/4 + 1 2/4
Extension: Build It!
If you have fraction manipulatives (like fraction circles or strips), try to build the conversions and additions from Part 1 and Part 2. How does using physical pieces help you understand the concepts?
Game
Fraction Face-Off: The Quick Challenge!
Objective: Be the first to correctly shout out the answer!
Materials:
- Whiteboards or scratch paper for each team/pair
- Markers/pencils
- List of fraction problems (provided by teacher)
How to Play:
- Divide into Teams/Pairs: Your teacher will divide you into small teams or pairs.
- Problem Time: Your teacher will display or read aloud a fraction problem (e.g., "Convert 2 1/4 to an improper fraction" or "Solve 1 1/3 + 2 1/3").
- Race to Solve: As soon as the problem is given, both teams/pairs race to solve it on their whiteboard or scratch paper.
- Shout It Out! The first team/pair to correctly write down the answer and shout "Face-Off!" gets a point.
- Explain Your Answer (Optional): If there's a tie or a question about an answer, the teacher might ask a team to explain their steps.
- Keep Score: The teacher will keep track of points.
- Winner: The team/pair with the most points at the end of the game wins!
Example Problems for the Teacher to Use:
Conversions:
- Convert 3 1/2 to an improper fraction.
- Convert 10/3 to a mixed number.
- Convert 2 3/5 to an improper fraction.
- Convert 7/2 to a mixed number.
- Convert 4 1/3 to an improper fraction.
Addition/Subtraction:
- Solve 1 1/4 + 2 1/4.
- Solve 3 2/5 - 1 1/5.
- Solve 2 1/6 + 1 3/6.
- Solve 4 5/8 - 2 3/8.
- Solve 1 2/7 + 3 3/7.
Challenge Problems (if time allows):
- Sarah had 2 1/2 apples. She ate 1/2 of an apple. How many apples does she have left?
- A recipe calls for 1 3/4 cups of flour. If you want to double the recipe, how much flour do you need? (Hint: You can add 1 3/4 + 1 3/4)
Answer Key
Answer Key for Fractions
Warm Up: Fraction Frenzy Starter
-
Draw a picture to represent the fraction 3/4.
- Thought Process: Draw a shape (e.g., a circle or rectangle) and divide it into 4 equal parts. Shade 3 of those parts.
- Answer: (Drawing should show 3 out of 4 parts shaded)
-
What does the numerator tell us?
- Thought Process: Recall the definition of the top number in a fraction.
- Answer: The numerator tells us how many parts we have or are considering.
-
What does the denominator tell us?
- Thought Process: Recall the definition of the bottom number in a fraction.
- Answer: The denominator tells us the total number of equal parts the whole is divided into.
-
Is 2/5 a proper or improper fraction? How do you know?
- Thought Process: Compare the numerator and the denominator to determine the fraction type.
- Answer: 2/5 is a proper fraction because the numerator (2) is smaller than the denominator (5).
Mixed Number Maneuver Worksheet Answer Key
Part 1: Convert Mixed Numbers to Improper Fractions
-
1 1/2
- Thought Process: (1 x 2) + 1 = 3. Keep the denominator 2.
- Answer: 3/2
-
3 2/3
- Thought Process: (3 x 3) + 2 = 11. Keep the denominator 3.
- Answer: 11/3
-
2 3/4
- Thought Process: (2 x 4) + 3 = 11. Keep the denominator 4.
- Answer: 11/4
-
5 1/6
- Thought Process: (5 x 6) + 1 = 31. Keep the denominator 6.
- Answer: 31/6
Part 2: Convert Improper Fractions to Mixed Numbers
-
7/3
- Thought Process: 7 ÷ 3 = 2 with a remainder of 1. Whole number is 2, numerator is 1, denominator is 3.
- Answer: 2 1/3
-
9/4
- Thought Process: 9 ÷ 4 = 2 with a remainder of 1. Whole number is 2, numerator is 1, denominator is 4.
- Answer: 2 1/4
-
11/5
- Thought Process: 11 ÷ 5 = 2 with a remainder of 1. Whole number is 2, numerator is 1, denominator is 5.
- Answer: 2 1/5
-
10/3
- Thought Process: 10 ÷ 3 = 3 with a remainder of 1. Whole number is 3, numerator is 1, denominator is 3.
- Answer: 3 1/3
Part 3: Add and Subtract Mixed Numbers (Like Denominators)
-
2 1/5 + 1 2/5
- Thought Process: Add fractions: 1/5 + 2/5 = 3/5. Add whole numbers: 2 + 1 = 3.
- Answer: 3 3/5
-
4 3/8 + 2 1/8
- Thought Process: Add fractions: 3/8 + 1/8 = 4/8. Add whole numbers: 4 + 2 = 6. Simplify 4/8 to 1/2.
- Answer: 6 1/2
-
3 5/6 - 1 2/6
- Thought Process: Subtract fractions: 5/6 - 2/6 = 3/6. Subtract whole numbers: 3 - 1 = 2. Simplify 3/6 to 1/2.
- Answer: 2 1/2
-
5 3/4 - 2 1/4
- Thought Process: Subtract fractions: 3/4 - 1/4 = 2/4. Subtract whole numbers: 5 - 2 = 3. Simplify 2/4 to 1/2.
- Answer: 3 1/2
Part 4: Solve It!
- Naima drank 1 1/3 cups of water in the morning and 2 1/3 cups of water in the afternoon. How much water did she drink in total?
- Thought Process: This is an addition problem. 1 1/3 + 2 1/3. Add fractions: 1/3 + 1/3 = 2/3. Add whole numbers: 1 + 2 = 3.
- Answer: Naima drank 3 2/3 cups of water in total.