Exploring and noticing

There are 319 NRICH Mathematical resources connected to Exploring and noticing
Road maker
problem

Road maker

Age
14 to 18
Challenge level
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Which of these roads will satisfy a Munchkin builder?
Tug of War
problem

Tug of War

Age
5 to 7
Challenge level
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Can you use the numbers on the dice to reach your end of the number line before your partner beats you?
The Legacy
problem

The Legacy

Age
14 to 16
Challenge level
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Your school has been left a million pounds in the will of an ex- pupil. What model of investment and spending would you use in order to ensure the best return on the money?
Root hunter
problem

Root hunter

Age
16 to 18
Challenge level
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In this short problem, try to find the location of the roots of some unusual functions by finding where they change sign.
First Connect Three
problem

First Connect Three

Age
7 to 11
Challenge level
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Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?
Connect Three
problem

Connect Three

Age
11 to 16
Challenge level
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In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
Mobile Numbers
problem

Mobile Numbers

Age
5 to 11
Challenge level
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In this investigation, you are challenged to make mobile phone numbers which are easy to remember. What happens if you make a sequence adding 2 each time?
Twisting and Turning
problem

Twisting and Turning

Age
11 to 14
Challenge level
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Take a look at the video and try to find a sequence of moves that will untangle the ropes.
Caterpillars
problem

Caterpillars

Age
5 to 7
Challenge level
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These caterpillars have 16 parts. What different shapes do they make if each part lies in the small squares of a 4 by 4 square?
Matchless
problem

Matchless

Age
14 to 16
Challenge level
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There is a particular value of x, and a value of y to go with it, which make all five expressions equal in value, can you find that x, y pair ?