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Science/mathematics/Arithmetic, units, and scale
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mathematics.arithmetic-and-units · 01 · quantities

Arithmetic, units, and scale.

Numbers become useful when their operations preserve meaning and units.

Learning outcome: Calculate, convert and estimate while keeping dimensions visible.

scale and uncertainty
Calculate, convert and estimate while keeping dimensions visible. Diagram is schematic and not to scale.

Core ideas

Build the model

01

signed quantities and ratios.

02

powers of ten and scientific notation.

03

SI prefixes and dimensional cancellation.

Engineering bridge

Where it is used

  • numbers, units, and scale
  • measurement and engineering notebooks

Original Lilerno structure and wording. Visuals are conceptual, inputs are not a design specification, and practical work requires appropriate supervision.