Standard Measurement – Units of energy and mass

This lesson comprises two (2) master classes focusing on:

• Metric units of measurement
• Taking measurements
• Calculating measurement errors
• Using the metric units for mass and energy

Content:

MS-M1.1

• Review the use of different metric units of measurement, including units of area, take measurements, and calculate conversions between common units of measurement, for example, kilometres to metres or litres to millilitres
• calculate the absolute error of a reported measurement using \( Absolute\ error=12 \times Precision \) and state the corresponding limits of accuracy
  • find the limits of accuracy as given by: \( Upper\ bound=Measurement+Absolute\ error \) and \( Lower\ bound=Measurement-Absolute\ error \)
  • investigate types of errors, eg human error or device limitations
  • calculate the percentage error of a reported measurement using \( Percentage\ error=\frac{Absolute\ error}{Measurement} \times 100% \)
• Use standard form and standard metric prefixes in the context of measurement, with and without a required number of significant figures
  • standard prefixes include nano-, micro-, milli-, centi-, kilo-, mega-, giga- and tera-

MS-M1.3

• Review the use of metric units of mass in solving problems, including grams, kilograms and tonnes, their abbreviations and how to convert between them
• Use metric units of energy to solve problems, including calories, kilocalories, joules and kilojoules, their abbreviations and how to convert between them
• Use units of energy and mass to solve problems related to food and nutrition, including calories
• Use units of energy to solve problems involving the amount of energy expended in activities, for example, kilojoules
• Use units of energy to solve problems involving the consumption of electricity, for example kilowatt hours, and investigate common appliances in terms of their energy consumption