Students know how to compute the surface area and volume of basic 3-D objects and understand how they change under a change in scale. Students convert between different units of measurement. They increase their facility with ratio and proportion and compute percentages of increase and decrease and simple compound interest. They graph linear functions and understand the idea of slope and its relation to ratio. Students know the properties of and compute with rational numbers expressed in a variety of forms.
Students use exponents, powers, and roots and use exponents in working with fractions.
2.1 understand negative whole number exponents. Students express quantitative relationships using algebraic terminology, expressions, equations, inequalities and their graphs. 1.5 represent quantitative relationships graphically and interpret the meaning of a specific part of a graph in terms of the situation represented by the graph 2. Students interpret and evaluate expressions involving integer powers and simple roots. 2.1 interpret positive whole number powers as repeated multiplication and negative whole numbers as repeated division or multiplication by the multiplicative inverse.