Light is made up of many different wavelengths, and each wavelength corresponds to a unique color. On thin surfaces, such as soap bubbles and oil slicks, light reflecting off of the top of the film interferes with light reflecting off of the back of the film. The different thicknesses of the film in different areas are what lead to the different colors.

These To Go Lessons can be used to create a "grab and go" style activity with supplies included. Add your local contact information, print, and cut each sheet in half. The left side can be used on the outside of the paper bag or box to identify the activity, and the right side can be placed in the package as an instruction sheet.