activities for teaching biology

In the lab, Who Took Jerell’s iPod? -- An Organic Compound Mystery, students learn how to test for triglycerides, glucose, starch, and protein and then use these tests to solve a mystery. The activity reinforces students understanding of the biological functions and food sources of these different types of organic compounds.

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In the lab, What Parts of a Plant Do We Eat?, Students review the structure of angiosperm plants and learn about the diversity of plant form by using evidence from examination of fruits and vegetables to identify which part of the plant each fruit or vegetable is.

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In the lab, Alcoholic Fermentation in Yeast, students learn about the basics of aerobic cellular respiration and alcoholic fermentation and design and carry out experiments to test how variables such as sugar concentration influence the rate of alcoholic fermentation in yeast. In an optional extension activity students can use their yeast mixture to make a small roll of bread.

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In the lab, Studying Our Senses, students investigate how a person identifies different flavors of jellybeans, including the contribution of smell to taste sensations. Students also explore the surprising ways the brain interprets the patterns of light and dark that reach our eyes; visual illusions illustrate general principles of sensory processing. 

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In the lab, Breathing and Holding Your Breath, students begin with interactive activities to develop a basic understanding of why cells need oxygen and need to get rid of carbon dioxide, how the circulatory and respiratory systems cooperate to bring oxygen and remove carbon dioxide from cells all over the body, and how the nervous system regulates breathing. Then, students carry out an experiment to test whether changing levels of oxygen and carbon dioxide influence how long they can hold their breath. 

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In the lab, Regulation of Human Heart Rate, students learn how to measure heart rate accurately. Then students design and carry out an experiment to test the effects of an activity or stimulus on heart rate, analyze and interpret the data, and present their experiments in a poster session. In this activity students learn about both cardiac physiology and scientific method.

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In the lab, Invertebrate Diversity, students compare the external anatomy and locomotion of earthworms, mealworms, crickets and crayfish, all of which can be purchased at low cost from local pet stores.  Discussion questions help students understand the evolutionary basis of observed similarities and differences. This activity can be used as an introduction to the Annelid and Arthropod phyla and the principle that form matches function.

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In the lab, Some Similarities between the Spread of an Infectious Disease and Population Growth, a simple simulation demonstrates exponential spread of infectious disease in a population, and discussion questions develop student understanding of how human diseases spread. Additional discussion questions and a graphing activity develop an understanding of exponential and logistic population growth.

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In the lab, Evolution by Natural Selection, principles of natural selection are demonstrated by a simulation involving different color pompoms on different color and texture habitats and student feeders equipped with different types of feeding implement. Students learn how different adaptations contribute to differences in survival and reproductive success, which results in changing frequencies of genotypes in the populations.

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