| 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 | Converting cm to mm and back |
| What length (min) | 5 |
| What age group | Year or Grade 2 |
| Class size | 2 |
| 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 |
Mathematics
Converting cm to mm and back
Year 2
5 minutes
2
This lesson meets the standards for measurement and geometry as outlined in the UK National Curriculum for Mathematics at Year 2.
| Step Number | Step Title | Length | Details |
|---|---|---|---|
| 1 | Introduction | 1 min | Briefly explain the importance of understanding cm and mm. |
| 2 | Direct Instruction | 2 mins | Demonstrate how to convert cm to mm (1 cm = 10 mm) and vice versa. |
| 3 | Guided Practice | 1 min | Have students practice conversion with given examples. |
| 4 | Physical Activity Break | 30 sec | Engage in a quick physical activity to refresh focus (e.g., throw bean bags). |
| 5 | Independent Practice and Homework | 30 sec | Assign homework (conversion problems) and explain the checking process. |
"Good morning, everyone! Today, we are going to learn about a very important relationship in measurement – how to convert centimeters to millimeters and back again. Can anyone tell me if they’ve heard of centimeters or millimeters before? Great! Understanding these units will help us measure things more accurately in our daily lives, like the height of a plant or the length of a pencil. Let’s dive in!"
"To start, let's look at how we can convert centimeters to millimeters. Remember, 1 centimeter equals 10 millimeters. So, if I have 2 centimeters, how many millimeters do we have? That's right, 20 millimeters! Now, how about the other way around? If I have 30 millimeters, how many centimeters do I have? Yes, 3 centimeters! Now, let me show you with our ruler. Watch closely as I measure."
[Demonstrate using the ruler, pointing out the cm and mm markings.]
"Now it’s your turn! I’m going to give you a few examples to practice. For the first example, if I say 4 centimeters, how many millimeters is that? Yes, that’s 40 millimeters! Wonderful! Now, let’s try another one. If I give you 25 millimeters, how many centimeters do we have? That’s right, 2.5 centimeters! Fantastic job, everyone! You are doing great."
"Alright, time to shake off some of that learning! Let’s take a quick break and play a little game. We’ve got some bean bags here. I’d like you to throw them into a container at the other end of the room. For each bean bag you throw in, shout out how many millimeters are in each centimeter! Let’s go!"
[Conduct the physical activity for 30 seconds, encouraging participation.]
"Now that we’re refreshed, let’s get back to work! For your homework, I want you to complete a worksheet that has plenty of conversion problems for you to practice. You’ll be converting from centimeters to millimeters and back again. Make sure to check your answers when you’re done. And remember, I will be going through the answers in our next class, so we can discuss them together and I’ll give you individual feedback. Does that sound good? Great work today, everyone!"
Let's stretch and move our way,
With simple exercises to brighten the day!
1. **Reach for the Sky** – Stand up tall,
Stretch those arms, give it your all!
2. **Toe Touches** – Bend and sway,
Touch your toes, then up, hooray!
3. **Jumping Jacks** – Let’s count to ten,
Open and close our arms again!
4. **High Knees** – Run in place,
Lift those knees with a smiling face!
5. **Squats** – Down we go, like we're sitting in a chair,
Up again, don’t you dare despair!
6. **Wiggly Worms** – Wiggle side to side,
Move your body like it's a joyful ride!
7. **Shadow Boxing** – Punch the air with glee,
Let’s see those fists, so wild and free!
8. **Marching in Place** – Lift your knees, one by one,
Let's keep it moving, this is just for fun!
9. **Animal Walks** – Be a bear, crawl on the floor,
Or hop like a bunny, let’s do it more!
10. **Slow Deep Breaths** – Inhale big, then exhale slow,
Feel the calm as we let our energy flow.
After our fun, we'll learn and play,
More about measurements, hip hip hooray!