3-4-5-6-year-old 7 year old 8-9-year-old 10 years and 11-year-old a 12-year-old
The origin of:
Mainland China
Province:
Shanxi province
Cities:
In Taiyuan City
The application of gender:
Neutral
Color classification:
Rotating speed car separation iron sand capsule somersault gravity trolley seesaw small hole Imaging thermal expansion and contraction blowing air suspension ball air cannon 3D glasses paintball gun leather band gun Periscope
The type of experiment:
Physics
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Items weight estimation 0 g, subject to actual weight
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