There are **21** NRICH Mathematical resources connected to **PrimaryCurious**, you may find related items under Habits of Mind.

Watch this animation. What do you see? Can you explain why this happens?

What do you see as you watch this video? Can you create a similar video for the number 12?

Try out some calculations. Are you surprised by the results?

Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?

Look at three 'next door neighbours' amongst the counting numbers. Add them together. What do you notice?

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?

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.

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?

Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

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.

These clocks have only one hand, but can you work out what time they are showing from the information?

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?

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?

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?

Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.

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?

Explore ways of colouring this set of triangles. Can you make symmetrical patterns?

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

Start with a triangle. Can you cut it up to make a rectangle?

Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?