Exploring and noticing

There are 413 NRICH Mathematical resources connected to Exploring and noticing
Xavi's T-shirt
problem
Favourite

Xavi's t-shirt

Age
7 to 16
Challenge level
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How much can you read into a T-shirt?

Seeing Parallelograms
problem
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Seeing parallelograms

Age
7 to 11
Challenge level
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Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

Rhombus It
problem
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Rhombus it

Age
11 to 16
Challenge level
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Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.

Parallelogram It
problem
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Parallelogram it

Age
11 to 16
Challenge level
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Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

Three neighbours
problem
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Three neighbours

Age
7 to 14
Challenge level
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Take three consecutive numbers and add them together. What do you notice?
Take your Dog for a Walk
problem
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Take your dog for a walk

Age
7 to 11
Challenge level
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Use the interactivity to move Pat. Can you reproduce the graphs and tell their story?

Seesaw Shenanigans
problem
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Seesaw shenanigans

Age
3 to 7
Challenge level
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A group of animals has made a seesaw in the woods. How can you make the seesaw balance?

Subtraction Slip
problem
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Subtraction slip

Age
5 to 7
Challenge level
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Can you spot the mistake in this video? How would you work out the answer to this calculation?
Compare the Calculations
problem
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Compare the calculations

Age
7 to 11
Challenge level
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Can you put these four calculations into order of difficulty? How did you decide?