SIMPLE MACHINES: PULLEY, LEVER, INCLINED PLANE, SCREW, Few or no moving parts, COMPLEX MACHINES: SCISSORS, WHEELBARROW, BICYCLE, Two or more simple machines working together, BOTH: Make work easier., Devices made by people to help us to do our work,

SIMPLE, COMPLEX OR BOTH

Табло

Визуален стил

Опции

Шаблон за превключване

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