2 didactic hours


Tahtien varikkyys

3.5
Average: 3.5 (2 votes)
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Tahtien eri väriset radat taivaalla

1
Average: 1 (1 vote)
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Tahtien eri väriset radat taivaalla

4
Average: 4 (1 vote)
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Keksinnot ja tahtitiede

4
Average: 4 (3 votes)
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Shooting Star (IBSE Learning Activity)

3
Average: 3 (1 vote)
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Диаграма "Спектър-светимост"

4.444445
Average: 4.4 (9 votes)
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Наблюдения на Луната и изследване на лунната повърхност

4.42857
Average: 4.4 (7 votes)
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Фотоефект

4.375
Average: 4.4 (8 votes)
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About the Moon and its craters (Theory)

4.333335
Average: 4.3 (3 votes)
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Solar Rotation (Students Activities)

4
Average: 4 (1 vote)
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