Reach for the Star

Distance time and speed graphs · Optional extension

L043 · Allow 10–15 minutes for learners ready to move on. Answers are available after an attempt.

Stretch

A runner covers 400 m in 80 s, rests for 20 s, then covers 200 m in 40 s. Find average speed for the whole journey.

Reveal a worked check after attempting

600 m/140 s=30/7≈4.29 m/s.

Deep challenge

A distance-time graph has a downward segment. Explain what the vertical axis must represent if the graph is valid.

Reveal a worked check after attempting

It can represent distance from a fixed starting point, which decreases on the return; cumulative distance travelled cannot decrease.

Recall & Review: feedback and extension integration

Lesson L043: Distance time and speed graphs

Objective: Interpret distance–time and speed–time graphs in context.

60-minute structure: 0-7 Connect & Check; 7-14 Share; 14-25 Present/model; 25-44 Apply route choice/practice; 44-52 independent exam-style check; 52-60 Recall & Review, WWW/EBI and next step.

What Went Well (WWW)

I read or constructed the graph accurately, used the scale and axes correctly and linked the relevant gradient, intercept, shape or trend to my conclusion.

Even Better If (EBI)

I will label units and scale clearly, show the calculation or graphical evidence I used and check that the interpretation fits the context.

Stretch and deep challenge

Stretch: A runner covers 400 m in 80 s, rests for 20 s, then covers 200 m in 40 s. Find average speed for the whole journey.

Deep challenge: A distance-time graph has a downward segment. Explain what the vertical axis must represent if the graph is valid.