Abstraction is the representation of essential features without including unnecessary details.  It is used to reduce the complexity of systems for users, hiding how things actually work, applying algorithms to different contexts and producing suitable user interfaces.  The first video explains the concept at a...

This video provides an introduction to waves which looks at the differences between types of wave.  It would make a good revision video which discusses mechanical and electromagnetic waves with examples of each, with how particles and fields fit into the topic.  They presenter also demonstrates the difference...

This Cape Farewell video clip shows scientists back at the National Oceanography Centre in Southampton, analysing the samples of phytoplankton and zooplankton taken in the Arctic, identifying species and counting their abundance.

Activity G - Plankton analysis is...