Age 5 to 11
Challenge Level
Being Curious - Primary Number
Number problems for inquiring primary learners.
Age 5 to 11
Challenge Level
Being Curious - Primary Measures
Measure problems for inquiring primary learners.
Age 5 to 11
Challenge Level
Being Curious - Primary Geometry
Geometry problems for inquiring primary learners.
Age 5 to 11
Challenge Level
Being Curious - Primary Statistics
Statistics problems for inquiring primary learners.
Next-door Numbers
Age 5 to 7
Challenge Level
Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?
Eightness of Eight
Age 5 to 7
Challenge Level
What do you see as you watch this video? Can you create a similar video for the number 12?
Five Steps to 50
Age 5 to 7
Challenge Level
Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?
Little Man
Age 5 to 7
Challenge Level
The Man is much smaller than us. Can you use the picture of him next to a mug to estimate his height and how much tea he drinks?
Colouring Triangles
Age 5 to 7
Challenge Level
Explore ways of colouring this set of triangles. Can you make symmetrical patterns?
Chain of Changes
Age 5 to 7
Challenge Level
Arrange the shapes in a line so that you change either colour or shape in the next piece along. Can you find several ways to start with a blue triangle and end with a red circle?
Light the Lights
Age 5 to 7
Challenge Level
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
Ring a Ring of Numbers
Age 5 to 7
Challenge Level
Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.
More Numbers in the Ring
Age 5 to 7
Challenge Level
If there are 3 squares in the ring, can you place three different numbers in them so that their differences are odd? Try with different numbers of squares around the ring. What do you notice?
Shaping It
Age 5 to 11
Challenge Level
These pictures were made by starting with a square, finding the half-way point on each side and joining those points up. You could investigate your own starting shape.
If the World Were a Village
Age 5 to 11
Challenge Level
This activity is based on data in the book 'If the World Were a Village'. How will you represent your chosen data for maximum effect?
Digit Addition
Age 5 to 11
Challenge Level
Try out this number trick. What happens with different starting numbers? What do you notice?
Number Differences
Age 7 to 11
Challenge Level
Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?
Tumbling Down
Age 7 to 11
Challenge Level
Watch this animation. What do you see? Can you explain why this happens?
Brush Loads
Age 7 to 11
Challenge Level
How can you arrange the 5 cubes so that you need the smallest number of Brush Loads of paint to cover them? Try with other numbers of cubes as well.
Two Clocks
Age 7 to 11
Challenge Level
These clocks have only one hand, but can you work out what time they are showing from the information?
Curious Number
Age 7 to 11
Challenge Level
Can you order the digits from 1-3 to make a number which is divisible by 3 so when the last digit is removed it becomes a 2-figure number divisible by 2, and so on?
Consecutive Numbers
Age 7 to 14
Challenge Level
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Triangle Transformation
Age 7 to 14
Challenge Level
Start with a triangle. Can you cut it up to make a rectangle?
Subtraction Surprise
Age 7 to 14
Challenge Level
Try out some calculations. Are you surprised by the results?
Three Neighbours
Age 7 to 14
Challenge Level
Take three consecutive numbers and add them together. What do you notice?
NRICH is part of the family of activities in the Millennium Mathematics Project.