Each group needs:

• 7-inch (18-cm) high oatmeal container
• 3 x 5 index card
• 1 X-Act-o knife
• 1 holographic diffraction grating (500 lines/mm or 12,700 grooves/in)
• 1 ruler
• colored pencils to draw the spectra
• copies of instructions, questions and homework pages (see Attachment section)

To share with the entire class:

• black spray paint (optional, but desirable)
• masking tape
• 1 incandescent light bulb
• thick black markers
• markers, aluminum foil, glue and other materials to decorate the outside of container
• prism (optional for Introduction/ Motivation section)
• slide projector (optional for Introduction/ Motivation section

Notes on materials:

Ask students to bring oatmeal containers from home.

Purchase holographic diffraction gratings in sheets or on card-mounted slides from:

Rainbow Symphony Store:

https://www.rainbowsymphonystore.com/

A set of 10 12" x 6" linear sheets with 500 line/mm for $25

A set of 50 2" x 2" linear calibrated card mounted slides with 500 line/mm for $20

A set of 100 2" x 2" linear calibrated card mounted slides with 500 line/mm for $35

For Introduction/Motivation Section (optional):

• prism
• slide projector