🛣️ What is a Kilometre?
A **kilometre (km)** is a unit of length used for long distances.
Important Relationships:
1 kilometre (km) = 1,000 metres (m)
1 kilometre (km) = 100,000 centimetres (cm)
1 kilometre (km) = 1,000,000 millimetres (mm)
🌟 Real-Life Examples of Kilometres
• Distance from your home to school might be 1 to 5 km
• Distance between Richmond Hill and downtown Toronto ≈ 25 km
• A marathon race is 42.195 km
• Driving from Toronto to Ottawa ≈ 450 km
• The distance a car can travel on one litre of gas is often measured in km
🚶 How Far is 1 Kilometre?
1 kilometre is about the distance you can walk in **10 to 15 minutes** at a normal speed.
Fun Fact:
If you walk 100 big steps, you have walked about 100 metres.
So 1,000 big steps ≈ 1 kilometre!
✏️ Let’s Practice Together, My Dear Student!
Practice 1: Choose the Best Unit
1. Distance from your bedroom to the kitchen → metres
2. Distance from Richmond Hill to Niagara Falls → kilometres
3. Length of your pencil → centimetres
Practice 2: Conversions
1. 3 km = 3,000 metres
2. 5,000 m = 5 km
3. 12 km = 12,000 metres
4. 1,500 m = 1.5 km
Practice 3: Word Problems (Canadian Style)
1. The distance from your house to school is 2.5 km. How many metres is that?
2,500 metres
2. A family drove 450 km from Toronto to Ottawa. If they drove 150 km in the first 2 hours, how many kilometres did they still have to drive?
450 km - 150 km = 300 km
Challenge Question
A marathon is 42 km long. If you run 8 km, how many kilometres do you still have to run?
42 - 8 = 34 km
Fantastic Job, My Dear Student! 🎉
You now understand millimetres, centimetres, metres, and kilometres very well! You can choose the right unit for any distance.
I am so proud of you for completing the length measurement unit. Next time you travel in the car, try guessing the distance in kilometres!
💕 You are smart. You are kind. You can do hard things.
When you are ready, tell me the next topic (Mass and Capacity, Perimeter, Area, or anything else) and I will create another beautiful lesson just for you!