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,

Табела

Визуелни стил

Поставке

Промени шаблон

Врати аутоматски сачувано: ?