Time

There are 104 NRICH Mathematical resources connected to Time
Order the changes
problem

Order the changes

Age
7 to 11
Challenge level
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Can you order pictures of the development of a frog from frogspawn and of a bean seed growing into a plant?
In Order
problem

In order

Age
7 to 11
Challenge level
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Can you rank these quantities in order? You may need to find out extra information or perform some experiments to justify your rankings.
Hike and Hitch
problem

Hike and hitch

Age
14 to 16
Challenge level
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Fifteen students had to travel 60 miles. They could use a car, which could only carry 5 students. As the car left with the first 5 (at 40 miles per hour), the remaining 10 commenced hiking along the road (at 4 miles per hour)...
Slow Coach
problem

Slow coach

Age
7 to 11
Challenge level
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How many of this company's coaches travelling in the opposite direction does the 10 am coach from Alphaton pass before reaching Betaville?
Sweeping Hands
problem

Sweeping hands

Age
7 to 11
Challenge level
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Use your knowledge of angles to work out how many degrees the hour and minute hands of a clock travel through in different amounts of time.
Race Time
problem

Race time

Age
11 to 14
Challenge level
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Frank and Gabriel competed in a 200m race. Interpret the different units used for their times to work out who won.
Millennium Man
problem

Millennium man

Age
7 to 11
Challenge level
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Liitle Millennium Man was born on Saturday 1st January 2000 and he will retire on the first Saturday 1st January that occurs after his 60th birthday. How old will he be when he retires?
Decimal Clock
problem

Decimal clock

Age
11 to 14
Challenge level
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A decimal clock is started at midnight. What time would it show at 6 o'clock in the morning?
Don't Be Late
problem

Don't be late

Age
11 to 14
Challenge level
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Mary is driving to Birmingham Airport. Using her average speed for the entire journey, find how long her journey took.
Times
problem

Times

Age
7 to 11
Challenge level
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Which times on a digital clock have a line of symmetry? Which look the same upside-down? You might like to try this investigation and find out!