Compare and order different numbers, including decimal numbers, and metric quantities involving length, mass, capacity and money.

A measuring game which can help children to understand how to use a ruler. Children need to measure various objects against a centimetre ruler. Two levels of difficulty with whole centimetre and half centimetre examples.

Teaching Clock is an open-ended teaching resource to help children explore telling the time in both analogue and digital formats. The digital clocks can be viewed in either 12-hour or 24-hour layout.

A great teaching clock which gives the time in analogue and digital times. Turn the clock on or back in different time periods.

Set the time on the analogue clock using the hours and minutes hand. This will really test your knowledge of telling the time!

This site can help you to read the time on an analogue clock. Different levels, including: reading time to the nearest hour, half hour, quarter hour, five minutes or minute. Options include 24 hour clock.

Confused about calendars and time intervals? This is a really useful site to learn about how to read a calendar and work out time intervals. Great as a teaching aid on an interactive whiteboard.

This simple to use site has balance scales which shows how things used to be weighed but it uses grams.

Learn to read a thermometer. Useful for getting to grips with reading lots of different scales. Also work out the difference in temperature between two thermometers.

This interactive teaching tool can be used in a variety of mathematical contexts such as multiplication arrays, finding different shapes with the same area, nets and more. It is useful because there are different backgrounds such as dots.

A simple tutorial on how the 24 hour clock works which also has interactive activities for you to test your knowledge.