| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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the variation between species and between individuals of the same species meaning some organisms compete more successfully, which can drive natural selection |
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How can variation lead to natural selection? Get students to come up with a list of differences between people in the class.
Are these caused by genetics or environmental factors?
Create a list of genetic, environmental and both variations. |
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The differences between individuals within a species are called variation . |
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Despite belonging to the same species, individuals often are different. What is this difference called and what two forms can it grouped into? |
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A species is defined as a group of organisms who's genetic information is compatible such that their offspring can also reproduce. |
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What is the definition of a species? |
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The variation between individuals within a species being continuous when there are (near) infinite number of possibilities. |
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What is continuous variation? |
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Continuous variation is often measureable and with units. |
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Eg
Hand span
height
weight |
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Discontinuous variation is often described by words or integers |
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What is discontinuous variation? |
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The variation between individuals within a species being discontinuous when fits into a distinct categoriy |
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Eg
Ear lobes: detached / attached
Eye Colour
Hair Colour
Gender
Blood Group
Number of legs
COMPARE
Foot length & shoe size |
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measurement and graphical representation of variation |
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How would a graph of discontinuous variation and continuous variation be different? Collect class data for height against no. of students and eye colour against number of students.
Plot these results as graphs.
Height (continuous variation) represented by a line graph.
Eye colour (discontinuous variation) represented by bar graph. |
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