Q1. Ravi travels 50km in 2 hours. What is his average speed?
✔ Divide distance by time to find the speed.
Q2. Siti drives from Tampines to Changi in 30 minutes. Convert this to hours.
✔ Thirty minutes is half of sixty minutes, which equals one hour.
Q3. Wei Ming cycles at 15km/h for 2 hours. How far did he go?
✔ Multiply speed by time to calculate the total distance travelled.
Show transcript
[Slide 1] Understanding Speed in Daily Life
Hello students! Today we explore speed using familiar places like Tampines. Remember, speed tells us how fast we travel a certain distance.
[Slide 2] The Bar Model Method
We use the bar model to visualise word problems clearly. This helps you see relationships between speed, distance and time easily.
[Slide 3] Worked Example: Ravi and Siti
Ravi cycles from Tampines MRT to a hawker centre. Siti drives the same route but takes less time. We need to find their speeds using the bars.
[Slide 4] Solving with Bar Models
If Ravi covers ten kilometres in one hour, his speed is sixty kilometres per hour. Draw the bar to show this relationship visually before calculating.
[Slide 5] Common Mistake Alert
Many students forget to change minutes into hours for speed. Ensure your units match before you start dividing or multiplying numbers.
[Slide 6] Recap and Practice
Remember to draw bar models for tricky speed questions. Always check your units and practice with local scenarios like MRT travel.