Allow the students to place objects in individual beams of light and make shadows and then in combinations of beams of light and observe the colors of the shadows .
(the students; to make; shadows) (the students; to observe; the colors of the shadows; T:then; T:in combinations of beams of light)
the students the students
to make to observe
shadows
the colors of the shadows T:then T:in combinations of beams of light