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There are 156 NRICH Mathematical resources connected to Primary interactive, you may find related items under Admin.
Broad Topics > Admin > Primary interactiveYou have a set of the digits from 0 to 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?
You have two sets of the digits 0-9. Can you arrange these in the five boxes to make four-digit numbers as close to the target numbers as possible?
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.
Try continuing these patterns made from triangles. Can you create your own repeating pattern?
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?
How many different triangles can you draw on the dotty grid which each have one dot in the middle?
Can you sort these triangles into three different families and explain how you did it?
Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?
Can you complete this jigsaw of the multiplication square?
Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.
Use the interactivity to find out how many quarter turns the man must rotate through to look like each of the pictures.
A game in which players take it in turns to choose a number. Can you block your opponent?
Sort the houses in my street into different groups. Can you do it in any other ways?
Can you put these shapes in order of size? Start with the smallest.
Use the interactivity to find all the different right-angled triangles you can make by just moving one corner of the starting triangle.
Use the interactivity to move Pat. Can you reproduce the graphs and tell their story?
How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?
Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?
Use the interactivity to help get a feel for this problem and to find out all the possible ways the balls could land.
How many different triangles can you make on a circular pegboard that has nine pegs?
Can you find all the different triangles on these peg boards, and find their angles?
Do you agree with Badger's statements? Is Badger's reasoning 'watertight'? Why or why not?
Here are some rods that are different colours. How could I make a yellow rod using white and red rods?
Use these head, body and leg pieces to make Robot Monsters which are different heights.
If you split the square into these two pieces, it is possible to fit the pieces together again to make a new shape. How many new shapes can you make?
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
Can you put the numbers 1 to 8 into the circles so that the four calculations are correct?
Arrange three 1s, three 2s and three 3s in this square so that every row, column and diagonal adds to the same total.
How would you move the bands on the pegboard to alter these shapes?
I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
Practise your tables skills and try to beat your previous best score in this interactive game.
Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
Here are the six faces of a cube - in no particular order. Here are three views of the cube. Can you deduce where the faces are in relation to each other and record them on the net of this cube?
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
Can you fill in this table square? The numbers 2 -12 were used to generate it with just one number used twice.
How many DIFFERENT quadrilaterals can be made by joining the dots on the 8-point circle?
There are six numbers written in five different scripts. Can you sort out which is which?
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?
Make one big triangle so the numbers that touch on the small triangles add to 10.
Use these four dominoes to make a square that has the same number of dots on each side.
Explore ways of colouring this set of triangles. Can you make symmetrical patterns?
What is the greatest number of squares you can make by overlapping three squares?
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?