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In this activity, students develop a timeline relating technological advances, particularly in microscopy, to how scientists have classified living organisms throughout history. Students use Internet and/or library resources to investigate important... (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)

This interactive, online module provides an introduction to the concept of a black hole. Students explore the components of a black hole by using a diagram of an accretion disk, an event horizon, and jets of hot gas. Students may complete this... (View More)

Audience: Middle school, High school
Materials Cost: Free

This activity provides tips and ideas for helping children do science with a digital camera–and have fun while doing so. For example, cameras can preserve the presence of transient events like clouds, contrails, rain, snow, air pollution and... (View More)

This is an article about detecting gravitational waves. Learners can read about how the Laser Interferometer Space Antenna (LISA) is detecting gravitational waves. An activity is included about how to build a mini-LISA and use it to explore the... (View More)

In this problem-based learning (PBL) activity, students take on the role of a student research scientist and explore the role of solar energy in determining climate. Students conduct experiments to determine the role of albedo in surface warming by... (View More)

In this activity, students solve exponential equations where the unknown is contained in the exponent. Students learn that taking base-10 or base-2 logs pulls down the exponent, allowing the unknown to be isolated and solved.  This activity is... (View More)

To determine if data values are reasonable, students need to understand the units of measurement and be able to estimate the expected range of values in data. This activity has groups of students collecting and recording data, changing some of the... (View More)

In this introductory classroom activity, students exercise their scientific skills of observation and deduction as they use their senses and simple laboratory assays, such as pH indicator paper, to identify mystery pollutants in water samples.... (View More)

This activity helps students understand the connections between remote-sensing technology, computer imagery and land cover assessment, and models how a satellite sensor communicates information to a computer. Digital information from a map created... (View More)