#### The Seven Hat Problem and Error Correcting Codes

The power of mathematical notation and reasoning is exploited to relate a famous recreational mathematics problem (hat problem) with an important method for sending and receiving messages that have a small percentage of errors (Hamming codes). The pr....

More details | Watch now#### Algebra

How simple algebra can be used to investigate cubes and other polyhedra up to icosahedra.

More details | Watch now#### Numbers HK

Harry gives an introduction to the difficulty of writing large numbers in Roman Numerals

More details | Watch now#### Algebra with Chinese subtitles

How simple algebra can be used to investigate cubes and other polyhedra up to icosahedra.

More details | Watch now#### Square Roots 2

#### All numbers are not equal

An introduction to the various types of numbers which are recognised as important.

More details | Watch now#### Fractions 2

An approach to adding and subtracting fractions, using an understanding of the processes involved.

More details | Watch now#### Fractions 1

How can we represent fractions in the simplest way? Equivalence of decimal and common fractions.

More details | Watch now#### Fractions 3

Mutiplying and dividing fractions: a systematic approach to this perennial problem.

More details | Watch now#### Percentages

Making life easy when using percentages. A sometimes fraught topic looked at differently.

More details | Watch now