PVC pipe, a DVD fragment, and black construction paper are all it takes to split white light into a full visible spectrum. This lab sheet walks grades 5 through 8 homeschoolers through all seven build steps, from cutting the pipe to about 10 inches and carving a 1 mm slit in one end cap, to inserting the DVD diffraction grating shiny-side toward the slit, to sealing gaps with tape so stray light cannot contaminate the view. The included diagram labels the slit, diffraction grating, and eyepiece, giving your student a clear reference before assembly begins.

Once built, making a homemade spectroscope earns its place as a hands-on centerpiece in a light and optics unit study. Your homeschooler points the slit at sunlight, an incandescent bulb, an LED, a fluorescent tube, and a candle flame, then records what the spectrum looks like for each source in the observations section at the bottom of the sheet. Completing the lab demonstrates that different light sources produce visibly different spectral patterns, a concept that bridges into chemistry, astronomy, and electromagnetic radiation at the middle school level.