| 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 | Rounding Decimals |
| What length (min) | 90 |
| What age group | Year or Grade 5 |
| Class size | 20 |
| What curriculum | envision mathematics |
| 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 | 10 |
| Create fill-in cards for students | |
| Create creative backup tasks for unexpected moments |
Rounding Decimals
Grade 5 (10-11 years old)
Mathematics
20 students
This lesson aligns with the national curriculum standards for mathematics, specifically focusing on number & operations and mathematical reasoning as outlined in Envision Mathematics.
| Step Number | Step Title | Length (minutes) | Details |
|---|---|---|---|
| 1 | Introduction | 10 | Introduce the topic of rounding decimals. Engage students with questions about their prior knowledge on the topic. |
| 2 | Direct Instruction | 20 | Teach the rules of rounding decimals. Explain rounding up and down, and use examples from real life, like money. |
| 3 | Guided Practice | 15 | Work through a few examples together as a class. Use the whiteboard to demonstrate rounding to the nearest whole number, tenth, and hundredth. |
| 4 | Group Activity | 25 | Divide students into groups of 4. Provide each group a set of rounding problems to solve collaboratively. Encourage discussion and teamwork. |
| 5 | Independent Practice | 10 | Distribute rounding decimal worksheets for students to complete individually while circulating to provide support. |
| 6 | Review and Check | 5 | Review answers to the worksheets as a class; clarify any misconceptions without calling individual students to present. |
| 7 | Homework Assignment | 5 | Assign rounding decimals homework for students to complete at home and review during the next class. |
"Good morning, class! Today, we are diving into an exciting topic in math: rounding decimals! Before we get started, can anyone remind me what decimals are and where we might see them in our daily lives?"
(Pause for student responses)
"Great answers! We encounter decimals in money, measurements, and even grades! Now, has anyone ever rounded a number? What does it mean to round something?"
(Encourage discussion and acknowledge contributions)
"Perfect! Rounding helps us simplify numbers, making them easier to understand. Let’s explore how to round decimals today."
"Now, let’s get into the rules of rounding decimals. First, we round based on the number we are interested in. For example, when rounding to the nearest whole number, we look at the decimal right after the whole number."
Draw a number line on the whiteboard and label a few decimals.
"If that decimal is 0.5 or higher, we round up. If it’s less than 0.5, we round down. Let’s take the number 2.7. What do you think we get when we round it to the nearest whole number?"
(Wait for responses)
"Correct! It rounds to 3. Now, let’s look at an example with tenths. If we have 4.34 and we want to round to the nearest tenth, which digit do we look at?"
(Prompt students for the answer)
"Yes, we look at the third decimal place. Since it is a 4, we stay at 4.3. Finally, rounding to the nearest hundredth follows the same rule."
Provide a real-life example, such as pricing items in a store.
"Imagine a candy bar costs $1.79. If we round it to the nearest whole number, what does it become?"
(Wait for answers)
"That's right! It rounds to $2.00! Good job, everyone!"
"Now, let’s practice together. I will write a few decimal numbers on the whiteboard, and we’ll round them together. First, let’s try 3.76."
Write 3.76 on the whiteboard.
"What is this when we round it to the nearest whole number?"
(Allow a few students to respond)
"Yes, it rounds to 4! What about to the nearest tenth?"
(Continue with the discussion)
"Excellent! It rounds to 3.8. Great teamwork. Now, let’s do one more example: 5.12. Who can tell me how we would round this to the nearest hundredth?"
(Guide through the process until students grasp the concept)
"Awesome job with the guided practice! Now, it’s time for a group activity. I’m going to divide you into groups of four. Each group will receive a set of rounding problems on these cards."
(Distribute group activity cards)
"Work together and discuss your answers – teamwork is key here! Remember to explain your reasoning to each other as you go. I will be walking around to help you if you need it. You have 25 minutes!"
(Allow time for group work, circulating and assisting as necessary)
"Time’s up, everybody! Let’s regroup. Now, I have some rounding decimal worksheets for you. I’d like each of you to complete these on your own. This is your chance to show what you know!"
(Distribute worksheets)
"Make sure you work quietly and focus. If you have a question, raise your hand, and I will come around to assist you. You have 10 minutes to complete this."
(Circulate around the classroom to provide support as needed)
"All right, everyone, let’s take a moment to review what we’ve done. Please pass your worksheets to the front. I will go through the answers with you as a class."
(Go through each question on the worksheet, prompting students for answers)
"Remember, if you got something wrong, it’s okay! This is how we learn. Let’s clarify any misconceptions together."
"Before we end for the day, I want you to continue practicing! For homework, I’m assigning you rounding decimals problems on a new worksheet. I expect each of you to complete it at home. Make sure you’re ready to discuss your answers next class."
(Provide students with details about where to submit their homework)
"Remember, practice makes perfect! See you all tomorrow!"
| Slide Number | Image | Slide Content |
|---|---|---|
| 1 | {Image: A classroom full of students} | - Introduction to rounding decimals |
| - What are decimals? | ||
| - Where do we see decimals in daily life? | ||
| - What does it mean to round a number? | ||
| 2 | {Image: A number line with decimals} | - Rules of rounding decimals |
| - Rounding based on the number we are interested in | ||
| - Decimal 0.5 or higher: round up | ||
| - Decimal less than 0.5: round down | ||
| 3 | {Image: Example numbers, like 2.7 and 3} | - Rounding to the nearest whole number |
| - Example: 2.7 rounds to 3 | ||
| - Identifying the decimal to round | ||
| 4 | {Image: A candy bar with a price tag} | - Rounding to tenths and hundredths |
| - Example: 4.34 rounds to 4.3 | ||
| - Real-life example: $1.79 rounds to $2.00 | ||
| 5 | {Image: A whiteboard with the number 3.76} | - Guided Practice Section |
| - Example: Rounding 3.76 to nearest whole number | ||
| - New decimal example: 5.12 to the nearest hundredth | ||
| 6 | {Image: Students collaborating in groups} | - Group Activity Preparation |
| - Working in groups of four | ||
| - Discussion and teamwork encouraged | ||
| 7 | {Image: Worksheets being passed out} | - Independent Practice: rounding worksheets |
| - Work quietly and focus on completing the tasks | ||
| - Opportunity to showcase knowledge | ||
| 8 | {Image: Students raising hands for answers} | - Review and Check: Discussing worksheet answers |
| - Clarifying misconceptions | ||
| - Learning from mistakes | ||
| 9 | {Image: Homework assignment sheet} | - Homework Assignment Overview |
| - Rounding decimals problems on a new worksheet | ||
| - Importance of practice | ||
| 10 | {Image: Teacher thanking students} | - Conclusion of the lesson |
| - Reminder about the next class and homework due | ||
| - Encouragement for continuous practice |
Round the following decimal to the nearest whole number: 8.3. What is the result?
Round the following decimal to the nearest tenth: 7.56. What is the result?
Round the following decimal to the nearest hundredth: 4.876. What is the result?
If the price of a book is $12.49, what is its price rounded to the nearest whole number?
Round 9.84 to the nearest tenth. What is the result?
Which of the following numbers rounds to 6 when rounded to the nearest whole number: 5.4, 6.1, or 5.9?
Round the decimal 3.145 to the nearest hundredth. What is the result?
If a jar has 15.75 liters of juice, what would this be when rounded to the nearest whole number?
Round 2.99 to the nearest tenth. What is the result?
Explain in your own words why we round numbers. What are some situations where rounding may be useful?