by The Open University
Available in 43 free installments
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After studying this Unit you should be able to:
Explain in English and by using examples, the conventions and language used in graph drawing to someone not studying the course
Use the following terms accurately, and be able to explain them to someone else: ‘time-series graph?, ‘conversion graph?, ‘directly proportional relationship?, ‘“straight-line” relationship?, ‘gradient?, ‘intercept?, ‘x-coordinate?, ‘y-coordinate?, ‘coordinate pair?, ‘variable?, ‘independent variable?, ‘dependent variable?, ‘average speed?, ‘velocity?, ‘distance-time graph?
Draw a graph on a sheet of graph paper, from a table of data, correctly plotting the points, labelling the graph and scaling and labelling the axes
Draw and use a graph to convert between a quantity measured in one system of units to the same quantity measured in a different system
Write down the formula of a straight-line graph, and be able to explain, using sketches, the meaning of the terms ‘gradient? and ‘intercept?
Comment critically on a graph by carefully reading out information
Explain how a distance-time graph could be used to plan a journey
Explain and use the mathematical relationship between distance, time, average speed and the gradient of distance-time graph
Construct a distance-time graph from a narrative account of a journey
Draw correctly, use and interpret distance-time graphs
Draw, interpret and use distance-time and position-time graphs in a specific context
Record how you tackle mathematical problems
Comment on the usefulness of tables and graphs for different purposes
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