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