Unit Conversion
Discussion
Factor-Label Method
Paraphrase this for an intro…
To investigate any physical phenomena, we must make measurements, communicate them to others, and record them in a way that will be understandable in the future. To do so, a system of quantities and units is required. Measurement is a comparison process in which the value of a quantity is expressed as the product of a value and a unit; that is,
{quantity} = {numerical value} × {unit}
where the unit is an agreed-upon value of a quantity of the same type. The concept of a quantity such as length is independent of the associated unit; the length is the same whether it is measured in feet or meters. A standard is a physical realization of the definition, with an agreed-upon value to be used as a reference.
Dimensional Analysis