12-18 years
Where Are You? Locating by the Sun
困難: ★
Studies on the Shadow of an Obelisk Used as Horizontal Sundial
困難: ★
Measuring the diameter of the Sun
困難: ★
Observations with a Pinhole Camera
困難: ★
Let us measure the excentricity of the terrestrial orbit
困難: ★
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Let us observe the daily path of the Sun
困難: ★
Lisa Pathfinder paper model
困難: ★
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Hubble Space paper model
困難: ★
★
Alma transporter paper model
困難: ★
★
Scale Models
困難: ★
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★
The Sun above and below the local horizon
困難: ★
Black hole
困難: ★
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★
Path of the North pole
困難: ★
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★
Teaching the origin of seasons
困難: ★
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★
Sunrise and sunset position change
困難: ★
★
Solar Motion Demonstrator
困難: ★
Universal simulator of the solar approach movement
困難: ★
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★
Mirror, Mirror
困難: ★
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★
Hot Air
困難: ★
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★
Delta, Delta, Delta
困難: ★
★
★
Telescope Allocation Committee
困難: ★
★
★
Astro-Madness
困難: ★
★
★
Super Gelatin
困難: ★
Telescope technology
困難: ★