Engineering, 14–17 years — 20 topics · MyLeoNes™ Kuks
20 engineering topics written for 14–17 years — not a older text simplified. In teaching order, each a deck of five cards: the idea, why it exists, a worked example, the common trap and where you meet it.
Engineering · 14–17 years
Engineering trade-offs
Engineering design is choosing a workable balance between goals that pull in different directions.
Forces and stress in structures
Loads become stresses inside materials, and those stresses explain how structures bend, stretch or break.
Safety factor
A safety factor leaves room for uncertainty, variation and unexpected loads instead of designing exactly to the breaking point.
Feedback control
A feedback system measures what is happening, compares it with a target and adjusts its action to reduce the difference.
Engineering requirements
Before designing, engineers turn a need into statements that can be checked. This keeps a vague wish from becoming a disappointing product.
Tolerances and fits
Real manufacturing is never perfectly exact. Tolerance sets the small range of sizes that still lets parts work together.
Engineering efficiency
Machines transform energy, but some input spreads into heat, sound or friction. Efficiency compares the useful output with the energy supplied.
Life-cycle engineering
An engineered product has effects before, during and after its use. Life-cycle thinking follows materials, energy and waste across all those stages.
Material properties
Engineers ask what a material can withstand, transmit or resist before choosing it for a job.
Engineering models
A model leaves out some reality so that a design can be predicted, calculated or tested before full construction.
Prototyping and testing
A prototype turns an idea into something that can reveal what drawings and calculations missed.
Design for manufacture
A design must be not only possible to imagine, but also possible to make repeatedly with real tools, materials and processes.
Ohm’s law
How voltage, current and resistance set the behaviour of a simple electrical circuit.
Human factors
Designing tools and systems around what people can perceive, remember and physically do.
Engineering reliability
Understanding how likely a system is to keep doing its job over a stated time and situation.
Failure modes and effects
A structured way to ask how a part could fail, what would happen, and what deserves attention first.
Torque and mechanical advantage
Torque explains how a force makes something turn, and why a longer handle can make the same job easier.
Heat transfer
Heat transfer explains how thermal energy moves by contact, moving fluids or radiation, and how engineers control that movement.
Series and parallel circuits
The arrangement of components changes how current has paths through a circuit, which affects brightness, reliability and control.
Logic gates
Logic gates turn simple yes-or-no inputs into a clear output, forming the basic decisions inside digital devices.
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