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In this activity, a three-part questionnaire launches students on discussions about where objects in space are located, and when they formed. By physically manipulating images of objects in space, students represent their own mental models of space... (View More)

This is an activity about the Venus Transit and how it helped astronomers determine the scale of the solar system. Learners will use measurement, ratios, and graphing to construct a model of the solar system and determine the relationship of each... (View More)

Audience: Middle school, Informal education
Materials Cost: Free

This is an activity about angular measurement. Learners will explore the relationship between angular size, actual size, and distance by using their finger, thumb and fist as a unit of angular measurement. Includes teacher background, student data... (View More)

This is a booklet containing 11 problem sets and 9 "Extra for Experts" challenges. Learners use provided textual information to determine the scale (e.g., kilometers per millimeter) for images of the lunar surface, Mars, planets, stars and galaxies... (View More)

Audience: Middle school
Materials Cost: 1 cent - $1 per student

In this activity, a three-part questionnaire launches students into discussions about where objects in space are located, and when they formed - an introduction to the concepts of structure and evolution of the universe. By physically manipulating... (View More)

In this interactive, online activity, students estimate the distances of objects in the Hubble Deep Field from Earth using the relationship between size, brightness, and distance. Students can complete this activity independently or in small groups.... (View More)

Audience: Middle school

In this interactive, online activity, students practice estimation skills as they begin to explore the Hubble Deep Field image. Students first give a rough estimate of the number of objects in the image. They then use representative sampling... (View More)

Audience: Middle school
Materials Cost: Free

This is an activity about size, distance, and perspective. Learners will observe two objects of the same size placed at different distances, and they will observe two objects of different size placed at varying distances. This concept is then... (View More)

This is an activity about size, distance, and perspective. Learners will observe two objects of the same size placed at different distances, and they will observe two objects of different size placed at varying distances. This concept is then... (View More)

Audience: Elementary school

This is an activity about using large numbers in astronomy. Learners will first estimate how long it would take to count to a billion, if it was a full-time job. Then, they will judge their estimates using a calculator to get a more definitive... (View More)