project
Observing the Sun and the Moon
How does the time of dawn and dusk vary? What about the Moon, how does that change from night to night? Is the Sun always the same? Gather data to help you explore these questions.
problem
Pinhole camera
Age
11 to 14
Challenge level
Make your own pinhole camera for safe observation of the sun, and find out how it works.
problem
Construct the solar system
Age
14 to 18
Challenge level
Make an accurate diagram of the solar system and explore the concept of a grand conjunction.
problem
Perfect eclipse
Age
14 to 16
Challenge level
Use trigonometry to determine whether solar eclipses on earth can be perfect.