Science Projects || Project model, Still model and Working models for science fair

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Duration: 0:36 Views: 164 Submitted: 1 year ago

Tags: science fair science exhibition science projects working models project models still models air cooler electricity from fruits escalator fire snake hydraulic lift jcb backhoe nephron periscope recycled plastic rocket ropeway cable car ship solar system stethoscope submarine volcano water purifier water tank overflow alarm rope way working models for science fair