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...introduction to algebra which builds on the idea of using letters to represent numbers. Section 1 looks at finding, simplifying and using formulas and includes useful tips on learning algebra. Section 2 introduces some of the terminology used in algebra and techniques such as evaluating and checking equivalence of expressions, identifying terms in an expression and...

...introduction to analysis which looks at real numbers and their properties, with a particular emphasis on inequalities. Section 1 starts by revising rational numbers and their decimal representations. Then, real numbers are introduced as infinite decimals. Section 2 looks at rules for manipulating inequalities and finding the solution set of an inequality. Section 3 looks...

...introduction to electronics, will show how electronic devices and systems pervade everything we do, and teach some of the basic ideas...Electronics is fundamental to modern life. Using an interactive website, videos, and easy-to-use electronic circuit design and simulation software, this free course, An introduction to electronics, will show how electronic devices and...

...Introduction to polymers, examines the use of polymers and demonstrates how their properties are controlled by their molecular structure. You will learn how this structure determines which polymer to use for a particular product. You will also explore the manufacturing techniques used and the how the use of polymerisation can be used to control the structure of...

...managed re-introduction are two techniques that are key to conserving individual species. The fen-raft spider is an endangered species, as Dr Helen Smith and Chris Sperring explain in the video. Conserving a fen species INTERVIEWER Well, what a glorious autumn day here in the county of Suffolk. I'm actually on the open marshland of the Suffolk Wildlife Trust nature...