Explore how populations change over time in a NetLogo model of sheep and grass. Experiment with the initial number of sheep, the sheep birthrate, the amount of energy sheep gain from the grass, and the rate at which the grass re-grows. Remove sheep that have a particular trait (better teeth) from the population, then watch what happens to the sheep teeth trait in the population as a whole. Consider conflicting selection pressures to make predictions about other instances of natural selection.


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Informal Education,reproductive advantage,NSDL,ecosystem stability,Grade 9,heritable traits,Biological science,heredity,Life science,Social Sciences,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-092,Populations,Stability and change,Grade 10,Grade 11,Grade 12,Life Science,Ecosystems,oai:nsdl.org:2200/20140422151642380T,Evolution,Higher Education,Adaptations,genetic variation,Natural selection,evolution model,evolution,species survival,Ecology, Forestry and Agriculture,Competition,Cause and effect,High School,Crosscutting concepts,Education,Geoscience,genetic traits



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Update Standards?

CCSS.Math.Practice.MP2: Common Core State Standards for Mathematics

Reason abstractly and quantitatively.

CCSS.Math.Practice.MP4: Common Core State Standards for Mathematics

Model with mathematics.

CCSS.Math.Content.HSF-IF.B.4: Common Core State Standards for Mathematics

For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities, and sketch graphs showing key features given a verbal description of the relationship.?

CCSS.Math.Content.HSF-IF.B.6: Common Core State Standards for Mathematics

Calculate and interpret the average rate of change of a function (presented symbolically or as a table) over a specified interval. Estimate the rate of change from a graph.?

CCSS.Math.Content.HSS-ID.C.7: Common Core State Standards for Mathematics

Interpret the slope (rate of change) and the intercept (constant term) of a linear model in the context of the data.
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