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Students use substitution to calculate the cost and length of time taken to repair washing machines, and formulate and solve a related linear equation.

Students write and solve linear equations to describe cooking times.

Students complete a table based on an algebraic formula for free fall velocity, plot the results, and interpret the graph.

Students write the simplest algebraic expressions for the lengths and area of parts of a composite shape, then solve these expressions using substitution. They then solve an equation that relates an algebraic expression to a given side length.

Students use linear equations to help them solve word problems about the cost of computer repairs.

Students use plastic money to explore and continue a number pattern about going to a disco. They then describe the pattern.

Students demonstrate their understanding of a linear algebraic equation to calculate the amount of money in a savings account.

Students complete a table and a graph of an equation about the costs of bike repairs, then interpret the graph to respond to questions.

Students use substitution to evaluate a linear equation for parking charges. Students expand, simplify, and change the subject of the equation.

Students complete a table then describe and write a rule to work out the number of matchsticks needed to make alien shape patterns.