Use the interactivities to fill in these Carroll diagrams. How do you know where to place the numbers?

Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?

Can you hang weights in the right place to make the equaliser balance?

Watch the video of Fran re-ordering these number cards. What do you notice? Try it for yourself. What happens?

Use the number weights to find different ways of balancing the equaliser.

Buzzy Bee was building a honeycomb. She decorated the honeycomb with a pattern using numbers. Can you discover Buzzy's pattern and fill in the empty cells for her?

Take a look at the video of this trick. Can you perform it yourself? Why is this maths and not magic?

Some children have been doing different tasks. Can you see who was the winner?

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

These interactive dominoes can be dragged around the screen.

Don't get rid of your old calendars! You can get a lot more mathematical mileage out of them before they are thrown away. These activities, using cut up dates from the calendar, provide numbers to. . . .

Can you put the numbers from 1 to 15 on the circles so that no consecutive numbers lie anywhere along a continuous straight line?

Matching Numbers game for an adult and child. Can you remember where the cards are so you can choose two which match?

Find the exact difference between the largest ball and the smallest ball on the Hepta Tree and then use this to work out the MAGIC NUMBER!

In your bank, you have three types of coins. The number of spots shows how much they are worth. Can you choose coins to exchange with the groups given to make the same total?

Number problems for inquiring primary learners.

Would you rather: Have 10% of £5 or 75% of 80p? Be given 60% of 2 pizzas or 26% of 5 pizzas?

There are nasty versions of this dice game but we'll start with the nice ones...

Can you each work out the number on your card? What do you notice? How could you sort the cards?

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?

How have the numbers been placed in this Carroll diagram? Which labels would you put on each row and column?

Use the fraction wall to compare the size of these fractions - you'll be amazed how it helps!

There are ten children in Becky's group. Can you find a set of numbers for each of them? Are there any other sets?

Use the numbers and symbols to make this number sentence correct. How many different ways can you find?

Dicey Operations for an adult and child. Can you get close to 1000 than your partner?

Some Games That May Be Nice or Nasty for an adult and child. Use your knowledge of place value to beat your opponent.

Number problems at primary level that require careful consideration.

Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?

Can you make a train the same length as Laura's but using three differently coloured rods? Is there only one way of doing it?

Can you complete this jigsaw of the multiplication square?

Each child in Class 3 took four numbers out of the bag. Who had made the highest even number?

Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of 3 dominoes?

Put operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number.

Can you find different ways of creating paths using these paving slabs?

There are six numbers written in five different scripts. Can you sort out which is which?

Can you draw a continuous line through 16 numbers on this grid so that the total of the numbers you pass through is as high as possible?

Move from the START to the FINISH by moving across or down to the next square. Can you find a route to make these totals?

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?

Use these head, body and leg pieces to make Robot Monsters which are different heights.

Twizzle, a female giraffe, needs transporting to another zoo. Which route will give the fastest journey?

Can you see how these factor-multiple chains work? Find the chain which contains the smallest possible numbers. How about the largest possible numbers?

Some of the numbers have fallen off Becky's number line. Can you figure out what they were?

Complete these two jigsaws then put one on top of the other. What happens when you add the 'touching' numbers? What happens when you change the position of the jigsaws?

Once a basic number sense has developed for numbers up to ten, a strong 'sense of ten' needs to be developed as a foundation for both place value and mental calculations.

As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?