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