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This is a lesson where learners explore conditions that might change the density of a substance, resulting in movement. Learners will observe convection and use this information to infer how movement occurs inside the Earth. The lesson models... (View More)

In this activity, students quantitatively evaluate the accuracy of a classification and understand a simple difference/error matrix. Students sort birds into three possible classes based on each bird’s beak: carnivores (meat eaters), herbivores... (View More)

This is a lesson where learners engage in a radiating heat activity and an activity that measures temperature in models with and without greenhouse gases. Learners will draw conclusions about the effect of greenhouse gases on temperature and on... (View More)

This lesson is comprised of three parts grouped to enable student understanding of classifying organisms. In part one of the lesson, students classify imaginary organisms represented by a mix of breakfast cereals, candies, nuts, raisins, etc.... (View More)

Size and shape are important in astrobiology. In this activity and slideshow, students observe the importance of relative size and morphology in identifying microscopic structures when viewed with the scanning electron microscope. This activity is... (View More)

This series of six activities encourages students to think about the characteristics of life and the possibility of looking for life on Mars. The first three activities from Destination: Mars establish the criteria for recognizing life. The other... (View More)

In this activity, students will observe the relationship between temperature and metabolism. The subjects for this experiment are Saccharomyces cerevisiae, one-celled organisms more commonly known as baker's yeast. By observing the presence of... (View More)

Highly productive commercial agriculture, known as industrial agriculture, is the focus of this investigation. Students will analyze and compare the inputs and outputs of industrial agriculture after reading background information, examining photos... (View More)

Keywords: Farming

Water supply in the Southwestern United States depends on snow. Students discover its importance through analysis and evaluation of data, satellite images, space shuttle photos, and ground-based observations, and then apply their findings in a... (View More)

Keywords: Snowpack

Students confront the challenge of improving global agricultural production in order to feed increasingly larger populations. Students evaluate tables, maps, graphs, photos and satellite images detailing global population growth patterns and... (View More)