AC9M7A01 Year 7 Mathematics

Content descriptor recognise and use variables to represent everyday formulas algebraically and substitute values into formulas to determine an unknown

Elaborations

• • Elaboration linking variables to attributes and measures being modelled when using formulas, such as the area of a rectangle is equal to the length x width as A\;=\;l\;\times\;w or using p\;=\;6g\;+\;b to describe a total of points expressed as goals (worth 6 points) and behinds (worth one point)
• • Elaboration interpreting and using formulas obtained from other sources; for example, maximum heart rates and target heart rates for moderate exercise
• • Elaboration substituting numerical values for variables when using formulas and calculating the value of an unknown in practical situations; for example, calculating weekly wage W given base wage b and overtime hours h at 1.5 times rate r, W\;=\;b+1.5\times h\times r, using values for mass m and volume v to determine density d of a substance where d\;=\;\frac mv
• • Elaboration using everyday formulas and their application to contexts on Country/Place, investigating the relationships between variables