S3.7.1 For the adult
Speed
How fast do I walk? Can I measure it at home?
What this chapter teaches
Speed is distance divided by time, in metres per second. The learner measures a walk, then works out the speed and finds that a walk is about 1 to 1.5 m/s.
Three questions to ask
There is no one right wording. Listen for the idea.
- If you walk 20 metres in 16 seconds, how do you find your speed?
- Why can a short trip be faster than a long one?
- What does average speed mean for a trip with a fast part and a slow part?
After the chapter, the learner can
- Calculate speed from distance and time
- Measure your walking speed in metres per second
What they copy into their notebook
Speed is how far a thing goes in one second. Speed = distance ÷ time. We write it in metres per second, m/s. Distance = speed × time.