Explain that they are going to have a chance to see if magnets will still attract magnetic materials if we put an object between the magnet and the material like the water and plastic cup.
(we; put; an object between the magnet and the material like the water and plastic cup) (they; to have; a chance to see if magnets will still attract magnetic materials)
we they
put to have
an object between the magnet and the material like the water and plastic cup
a chance to see if magnets will still attract magnetic materials