Created by
MsThompson
- Science
- Simple Machines
- Age 7-10
-
level: 4
- English
คำแนะนำของผู้เขียน
lever, wheel and axle, pulley, incline plane, wedge, screw
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Simple Machines
Created by
MsThompson
คำแนะนำของผู้เขียน
lever, wheel and axle, pulley, incline plane, wedge, screw