Measurement involves determining various properties such as length, weight, temperature, and time using specific tools. It is used daily to quantify things in our environment. There are different systems of measurement like the metric system which uses units like meters, centimeters, and liters. Tools like rulers, tapes, thermometers, scales, and clocks are commonly used to measure length, temperature, weight, and time. Units can be converted between systems by relating similar units, such as 1 liter equaling 1 kilogram or 1 yard equaling 91 centimeters. The properties measured depend on the material, with things like textiles often measured by weight in grams or kilograms while rocks may be characterized by their hardness.