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This demonstration shows that similar-appearing lights can be distinctly different, suggesting that the light emitted is generated in different ways. It requires some advance preparation/setup by the teacher and three recommended sources of orange... (View More)

In this activity, students explore the idea of classifying objects. They start by giving examples of objects that can be classified in everyday life and in science. They then characterize and classify a set of galaxies using their own scheme, and... (View More)

This is a lesson about the temperature on different planets in our solar system. Learners will explore the planetary temperature system. They explore how each aspect (e.g., mass, temperature and gravity) influences the system and the consequences of... (View More)

Audience: Middle school

Learners will look for the relationship between atmospheric mass and other characteristics of a planet. When the results are not completely conclusive, the students explore possible causes of discrepancies in the data. They conclude that gravity,... (View More)

Keywords: habitable zone
Audience: Middle school

This interactive, online activity asks learners to read information and tables to determine the correct sequence of events associated with servicing the Hubble Space Telescope. Students use the clues provided in the text and graphics to organize the... (View More)

This series of short articles details the discovery and subsequent impact of Comet Shoemaker-Levy 9 on Jupiter. The impending impact created quite a buzz among scientists since it marked the first of its kind. Student may work independently or in... (View More)

This is a lesson about radiation and the various sources of radiation that a spacecraft may encounter in its journey. Learners will calculate their annual exposure to high-energy radiation, identify sources of high-energy radiation, and explain why... (View More)

Keywords: Radiation

This is a activity about applying the scientific method to a design challenge. Learners will design and build a platform that will be placed on a heat source. The platform is expected to serve as an insulator for a cube of gelatin. The goal is to... (View More)

This poster shows comparison images of Earth and Mars on the front, with 11 Mars activities on the back. Learners can investigate: how far away is Mars, why does Mars have craters, water on Mars, Mars' minerals, how high the mountains are on Mars,... (View More)

This is an activity about determining the distance of a solar flare from the center of the Sun's disk. Learners will use transparency grids overlaid on images of the Sun in order to calculate the distance of a solar flare, similar to a signal... (View More)

Audience: Middle school