NPR's Scott Simon talks to math historian Glen Van Brummelen about his finding that the decimal point appeared in the 1440s, earlier than thought. How did the decimal point come to be? - the dot that ...

A recent discovery of documents dating back to the 15th century in Italy sheds new light on the history of the decimal point, revealing that this key element of mathematics was used much earlier than ...

Sometimes numbers seem to behave in mysterious ways, don't they? For example, when you multiply decimals, the numbers ...

A mathematical historian at Trinity Wester University in Canada, has found use of a decimal point by a Venetian merchant 150 years before its first known use by German mathematician Christopher ...

Model making, drawing and writing decimal numbers, showing that the decimal point is used to separate whole numbers from decimals. Children look at a variety of representations of tenths as decimals, ...

Watch the video to see some examples of how you can open a conversation and ask your colleagues for suggestions and ideas. Speaker: Not all numbers are whole numbers. Decimals are numbers that are ...

This math resource is designed for pupils to practice placing the decimal point when multiplying two decimal numbers and is good preparation for the work of “Multiplying Decimals with the Standard ...