A funny car is a purpose-built drag racing machine with a hinged body, huge rear tyres and immense power. Learn how it works and why it has that name.

A diplexer combines or separates two frequency bands so they can share one cable. Learn how it differs from a splitter and where it is used.

A scout scope is a low-power rifle optic mounted forward of the action. Learn its purpose, benefits, limits and how it differs from a normal scope.

A backplane is a circuit-board assembly that connects several modules through shared power and data paths. Learn how passive and active backplanes work.

A WebQuest is a structured learning activity in which students use selected online sources to solve a task. Learn its parts, benefits and limits.