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Students construct a series of GeoGebra applets that investigate the parameters gradient and intercepts of straight lines. They reinforce this knowledge with Microsoft Math 3.0.
This resource is valuable for addressing some of the Australian Curriculum: Mathematics content description in Years 8 to 10 related to straight line graphs. Dynamic geometry activities allow students to explore gradients and intercepts and to find relationships between gradients of lines that are parallel and perpendicular.