M3.9.8 For the adult
Graphs from real life
Can a graph tell the story of a walk?
What this chapter teaches
A distance time graph shows how far something is from the start as time passes. A flat part means no movement and a steeper part means a faster speed. A straight line through (0, 0) is direct proportion, and a straight line that does not pass through (0, 0) is not.
Three questions to ask
There is no one right wording. Listen for the idea.
- What does a flat part of a distance time graph tell you?
- How can you tell from the graph which part of a journey was the fastest?
- How can you tell from a straight line graph whether two amounts are in direct proportion?
After the chapter, the learner can
- Draw and read a distance time graph of a walk
- Explain what a flat part of a travel graph means
- Spot direct proportion as a straight line through (0, 0)
What they copy into their notebook
On a distance time graph, up means further away, flat means stopped, and steeper means faster. A straight line through (0, 0) is direct proportion. A line that misses (0, 0) is not.