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There are many uses for mathematics in the scientific world. In particular, we can use a mathematical model to predict and graph the amount of a drug, taken at regular time intervals, that remains in the human body.

For example, consider taking two pills of a drug every four hours. What happens to the amount of drug in your body after some period of time? Will the maximum amount of drug in the body continue to rise if the medication is taken regularly? Can we ensure that enough drug is present so that it will be effective but not toxic?

We will revisit these questions in the Introduction.

The Appendix contains optional material that is not required for the main section of this module. It covers the mathematics of exponential decay and its relation to half-life.

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This module was written by Gerda de Vries, Cole Zmurchok, and Drew Hanson, with help from Rachel Peredery. It was produced for CRYSTAL-Alberta, and was developed by using information from:

Modeling the Dynamics of Life, Frederick R. Adler. Brooks/Cole Publishing Company, 1998.