Algebra 8
Handling Data 9
All should be able to
Use letter symbols to represent unknown numbers or variables; know the meanings of the words term, expression and equation.
Construct and solve simple linear equations with integer coefficients (unknown on one side only) using an appropriate method (e.g. inverse operations).
Most should be able to
Begin to distinguish the different roles played by letter symbols in equations, formulae and functions; know the meanings of the words formula and function. Construct and solve linear equations with integer coefficients (unknown on either or both sides, without and with brackets) using appropriate methods (e.g. inverse operations, transforming both sides in the same way). Use formulae from mathematics and other subjects; substitute integers into simple formulae, including examples that lead to an equation to solve; derive simple formulae.
Some should be able to
Construct and solve linear equations with integer coefficients (with and without brackets, negative signs anywhere in the equation, positive or negative solution), using an appropriate method.
Use formulae from mathematics and other subjects; substitute numbers into expressions and formulae; derive a formula and, in simple cases, change its subject.
Given a problem that can be addressed by statistical methods, suggest possible answers. Design a data collection sheet or questionnaire to use in a simple survey;
construct frequency tables for discrete data.
Calculate statistics for small sets of discrete data:
-find the mode, median and range;
-calculate the mean, including from a simple frequency table, using a calculator for a larger number of items.
Discuss a problem that can be addressed by statistical methods and identify related questions to explore. Decide which data to collect to answer a question, and the degree of accuracy needed; identify possible sources. Plan how to collect the data, including sample size; design and use two-way tables for discrete data.
Collect data using a suitable method, such as observation, controlled experiment using ICT, or questionnaire. Calculate statistics, including with a calculator; recognise when it is appropriate to use the range, mean, median and mode; construct and use stem-and-leaf diagrams.
Discuss how data relate to a problem; identify possible sources, including primary and secondary sources.
Gather data from specified secondary sources, including printed tables and lists from ICT-based sources.