Compare the numbers and drag and drop the signs into place.

A teaching tool which is good for demonstrating greater than and less than with 2 and 3 digit numbers and rounding to 10 and 100.

A hundred square with movable counters and lots of different ideas on how you can use this as a teaching aid.

Lots of examples of ordering numbers from simple ordering numbers to 10 to fractions, decimals or negative and positive numbers.

Children need to guess a number below 100 from clues on the clouds. Good for developing mathematical vocabulary.

Useful for teaching number sequences throughout Key Stage 2 as it has many different levels.

A teaching tool for interactive whiteboards for estimating numbers on a numberline. Useful for decimals too.

An ordering numbers game involving negative numbers. Adjustable to full screen.

This is the best number line we've seen! As well as the usual flexibility of being able to change scales and markings you can zoom in on any area which makes it particularly good for use on interactive whiteboards in full-screen mode.

An interactive lesson which looks at patterns, where they occur and how they repeat. There are examples to try which become progressively more difficult.

An excellent teaching tool for displaying different number lines.

An interactive numberline to support the teaching of number and scales. Useful for teaching negative numbers.

A teaching tool to help with number sequences which go up or down. The counting sticks are either vertical or horizontal. There are different levels of difficulty from very simple to including negative numbers.

A good site for helping you to work out number sequences. It ranges from number patterns using numbers below 5 to decimals.

A number sequence game where the user needs to spot the next two numbers in the series. Not interactive as you only have to click to reveal the next numbers, however it is a useful tool for lesson starters or plenary activities. Three difficulty levels.

Using an image of a dartboard this site can reinforce rounding up to the nearest 10, 100, 1000 or whole number when using decimals. Either choose to reveal the answers or input answers.

Brilliant for practising number sequences. Lots of different levels from counting on and back in ones to decimals.

A compilation of useful Flash resources to support whole class teaching. There is a great interactive number line, a resource for sequencing numbers and more.