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Middle school  
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This is an activity about the correlation between annual precipitation and plant productivity in different Earth biomes. Learners consider water evaporation, solubility and abundance relative to life on Earth and relative to finding evidence for... (View More)

This is an activity about identifying images of different space bodies and determining the cause of the craters pictured in each. Learners will use the Solar System Update software within Space Update to complete a worksheet. This is Solar System... (View More)

The purpose of this investigation is to understand the change that takes place when water condenses from a gas to a liquid, and how a change in pressure affects this transformation. Materials needed for the experiment include a large (2L) soda... (View More)

This is an activity about ellipses, their focal points, and how the mathematics involved pertains to planetary orbits. Learners will draw their own ellipse using a string and pencil and calculate the minimum and maximum distance from the Sun for... (View More)

This activity is designed to help building student understanding of how scientific theories can change over time. Science theories change in the face of new evidence. However, when new explanatory frameworks, or theories, are proposed to explain... (View More)

This lesson will help students understand the cultural nature of scientific research. Students explore famous scientists, their theories, places of origin, and their culture. They document scientific viewpoints of famous scientists throughout... (View More)

In this activity, students use rulers to measure distances between hypothetical galaxies and then use these distances to calculate the velocities of the galaxies. This activity is part of the "Cosmic Questions" educator's guide that was developed to... (View More)

In this activity, students research scientific discoveries that happened by accident in the past, and learn how gamma-rays were discovered by 20th century scientists. In the process, students develop an understanding that science theories change in... (View More)

In this hands-on activity, students create a model soil profile in a two-liter beverage bottle, time the movement of water through different soils and observe the amount of water held in these soils. They observe the filtering ability of soils by... (View More)

In this activity, students engage in an ongoing investigation to find patterns of sunlight and shadow in a classroom (or any room that gets sunlight) at different times of the day and different times of the year. Students look for repeating... (View More)