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Complex Numbers and Completed Square Form

MEI provides this interactive activity for complex numbers.It shows how completing the square allows students to determine how the graph of y=x2 should be translated to give the graph of the required quadratic equation and how the complex roots of a quadratic equation can be related to the graph of the quadratic...
Publication date:
2000 - 2009

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Darwin and Natural Selection

In this activity from ARKive, students look for similarities between the basic body plans of different vertebrates as evidence of evolutionary change.This customisable PowerPoint presentation builds the scientific explanation of natural selection by illustrating four key observations:All organisms produce more...
Publication date:
2010 to date

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Evolution - 'Descent with Modification'

In this activity from ARKive students look for similarities between the basic body plan of different vertebrates as evidence of evolutionary change.
Publication date:
2010 to date

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Evolution - Peppered Moth

In this activity from ARKive students observe images and video material (with web access) of pale and dark forms of peppered moth. The activity uses the relative number of pale and dark forms in different environments as a model for evolution.
Publication date:
2010 to date

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Evolution - Family Ties

In this activity from ARKive students observe images and video material (with web access) of different primates. The activity presents evidence for a common ancestor shared by different animal groups.
Publication date:
2010 to date

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