5-year-old 6 years and 7-year-old 8-9-year-old 10 years and 11-year-old a 12-year-old
The application of gender:
Neutral
Color classification:
Steering car logic construction-intelligent assembly fighting competitive intelligent stacker carrying infrared obstacle avoidance car football Assembly sports car electric screwdriver
The type of experiment:
Physics
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Items weight estimation 0 g, subject to actual weight
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