This activity provides a real-life context for handling data, converting units and proportional reasoning. It is designed to be accessible to secondary maths students at Key Stages 3 and 4.

Detailed teachers' notes for this activity are available on our NRICH website.

# Nutrition and Cycling

##### Stage: 4 Challenge Level:

Andy is preparing to cycle from Land's End to John o'Groats.

He will undertake some training rides before the big ride.

These cards contain some information about his training schedule, details about the big ride, and his nutritional needs when he is cycling.

Have a look at the cards and try to make sense of the information.

1. Andy is planning a short training ride.

He wants to take either bananas or cheap cereal bars with him as on-the-road snacks.

How many bananas would he need to take, to minimise the calorie deficit at the end of his ride? How many cheap cereal bars?

(The calorie deficit is the difference between the calories Andy uses during his cycle ride, and the calories he consumes before and during the ride.)

2. After his training rides, Andy is ready to cycle from Land's End to John o'Groats.

How many days will it take?

Work out some of Andy's different options for carrying and consuming on-the-road snacks and drinks.

How can he maximise his consumption while cycling?

Together with his meals, can he consume enough calories each day so that he doesn't lose any weight?

How much of his calorie intake will need to be provided each day through off-the-road snacks?

Possible extension

The Fastest Cyclist follows on from this problem and challenges you to devise a winning cycling and nutrition plan if Andy is racing to reach John o'Groats.

Further information

If you're finding hard to get started, try looking at this hint.

Detailed teachers' notes for this activity are available on our NRICH website.

Related resources

The Fastest Cyclist is a more challenging follow-on from this activity, aimed at Key Stage 4 students.