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Description 
Desktop Stars, Part I
 Center for Particle Astrophysics


Part 1 of this 3part activity teaches students
about the inverse square law of radiation intensity, using a
simple laboratory setup with a light bulb, meter stick, and a
simple photometer (or even your hand). A teacher's guide and
student worksheets are provided. 
 Activity J2. Parallax  How Far Is It?

 Universe at Your Fingertips ASP*


Students use the method of parallax to determine the distances
to various objects inside and outside the classroom. A
possible alternative to Science Probe I activity 14E 
The Relationship between Angular Size and Actual Size
 NASA/Imagine the Universe


Students are introduced the the idea of angular size and given two exercises to calculate angular size of everyday and celestial objects. The relation between angular size and distance to the object is explained. 
 Activity J3. Hello Out There!

 Universe at Your Fingertips
ASP*


An activity to help students understand the idea of light travel
time as a measure of distance. Should be done after building a
scale model of the solar system, such as Science
Probe I activity 13B. 
G6. Count Your Lucky Stars: Sampling in Astronomy
 More Universe at Your Fingertips ASP*


Student practice using a sampling window on everyday objects, then to estimate
the number of stars in the sky visible to the unaided eye. Students
discuss how to estimate the effect of different variables on their star counts,
such as sky brightness, dark adaptation, cloud cover, etc.

E5. Follow the Falling Meteorite
More Universe at Your Fingertips ASP*


Students use demonstrations and data to locate a fallen meteorite by
triangulation

Scientific Notation
 IEER Classroom


Why use scientific notation, how it works, and how to do it, with a printable worksheet. 
Andromeda's
Scale
authorship


Measure objects by angular size and distance.
Then find the angular size of Andromeda by examining images of
different angular size to find the right scale. 
 G5. Light Travel Time and Earth History
More Universe at Your Fingertips ASP*


Students calculate the dates when light left different objects
in the sky (including some of the best known stars). They then do
research to relate the dates to some significant event in the
Earth's social or geologic history. 