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...course, Introduction to number theory, is a branch of mathematics concerned with the properties of integers. Section 1 introduces Euclid’s algorithm, which is used to find the HCF of two integers, and the idea of congruences, mathematical statements used to compare remainders when two integers are each divided by another integer. Section 2 introduces modular arithmetic,...

...course, A tour of the cell, contains a blend of text and a multimedia interactive component to look at the uniformity and diversity within cells. Fundamental to understanding how cells 'work' is a knowledge of the subcellular components and how they are arranged. This is introduced through a series of in-text and self-assessment questions...This free course, A tour of the...

...course, Assessing risk in engineering, work and life, investigates how we can manage risks at work, in the home and in the wider community. Risk is tied in with accidents so it is vital to understand how accidents arise, how likely they are to occur and how they can be prevented. These subjects are all covered in this course...Risk is something that must be taken into...

...course, Egyptian mathematics, looks at how the Egyptians solved mathematical problems in everyday life and the technology they used. An understanding of this area has only been possible following the translation of the Rosetta Stone...The Egyptians are known for being ahead of their time in comparison to some civilisations that came after them. This free course, Egyptian...