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

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

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

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

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

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

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

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?

Number problems at primary level that require careful consideration.

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. . . .

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

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.

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

More activities which will help you get a better of sense of numbers and understand what we mean by place value.

In this 100 square, look at the green square which contains the numbers 2, 3, 12 and 13. What is the sum of the numbers that are diagonally opposite each other? What do you notice?

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

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?

Number problems for inquiring primary learners.

In this article, Alf outlines six activities using the Gattegno chart, which help to develop understanding of place value, multiplication and division.

Can you complete this jigsaw of the multiplication square?

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

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

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

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

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

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

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

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

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

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?

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?

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?

These games devised by Jenni Way use dot cards which will help children see the structure of numbers 1-6 and give them confidence as they begin to add and subtract these numbers.

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?

This article for pupils explores what makes numbers special or lucky, and looks at the numbers that are all around us every day.

These interactive dominoes can be dragged around the screen.

Investigate what happens when you add house numbers along a street in different ways.

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?

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?

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!

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

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

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

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

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

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