"Pretty and Useful"

This link came through on one of the physics teaching mailing lists I’m subscribed to (thank you, Helen Reynolds - your description of it is perfect). It’s a chromoscope that provides “a nice way to display images at different wavelengths by allowing you to fade between them”. Take a look and I’m sure you’ll find a way to incorporate it into a lesson on the EM spectrum or even when teaching “Space” to Year 7.