Train Journeys - Sharp EL-531RH Teachers Manual

Train Journeys

Let's find the average speed at which the train travels between Norwich and London.
Speed = distance ÷ time
115 miles ÷ 1:52 is calculated as:
115 1
The train travels at approximately 61.6 mph.
How long does it take to complete the various stages of the journeys?
Why is the train that starts at Colchester described as a slow train?
What conjectures can you make about the different stages of the journeys?
• • • • • • • • • • • Using the activity in the classroom • • • • • • • • • • •
This activity could be used with small groups, with each group looking at different aspects of the
situation. For example, mean distances, times and speeds and relationships between distance and
time. Students could investigate the average speeds for various stages of the journey, considering
reasons for the differences in average speed.
• • • • • • • • • • • • • • • Points for students to discuss • • • • • • • • • • • • • •
Students could use the degrees/minutes/seconds key (D°M'S) to enter and compute various times.
The actual purpose of the key should be discussed with students, however.
Further Ideas
• Compare other train lines and other forms of transport.
What factors affect the speed of a train?
• Investigate the statement: "Longer journeys are quicker."
52
115÷ 1°52°00.
42
Junior high school
DEG