Correct: screw , lever , wheel and axle , inclined plane , ax, broom , building , fulcrum , knife , flagpole , scissors , sail, seesaw , nail, doorknob, Incorrect: paper , door , phone , computer , picture , book , backpack , chair , bag , wood, shelf , table , hair , hat , animal ,

simple machines

Табела

Визуелни стил

Поставке

Промени шаблон

Врати аутоматски сачувано: ?