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DIY新年吉祥物紐扣畫
$4.90
The model should be driven by dry cells.
To demonstrate how the earth orbits the sun and the moon orbits the earth.
The model can be used to show day, night, seasons of the year, changing length and directions of shadows. Phase of the moon as well as eclipses of the sun and moon can be shown. Supplied with teaching notes.
