(1) We push and pull to do many things. Example, play basketball, weeding, push trolley, play kites, sawing, scrubbing floor.
(2) Pushing and pulling can
(a) change the shape of objects.
(b) make things speed up.
(c) make things slow down.
(d) make things change direction.
(3) How things move depends on their sizes and how hard we push or pull them.
(a) The harder we push and pull, the further the things moves.
(b) If we push or pull equally hard, the smaller thing will move further.
(c) We should do the tests fairly.