Astonishing Science. Spectacular museum.
Year groups: 3-6 (ages 7-11)
To produce a shadow from two different coloured light sources, then use colour-filtered glasses to give the illusion of a 3D shadow.
3D Shadows Activity sheet
Download student activity sheet [pdf]
3D Glasses activity template
Download cut-out template sheet [pdf]
We’ve found interactive whiteboard projectors, slide projectors and overhead projectors are good strong light sources for this activity; torches or lamps are not very effective. Remember that projector bulbs can get very hot and the colour filters may melt if placed in front of them for too long.
Coloured filters from educational catalogues produce the correct shade of red and blue light. These filters can also be cut up and used for the students’ 3D glasses.
Make your room as dark as possible to get the full effect of the 3D shadows.
Stereo-daguerreotypes were the first form of 3D entertainment. They were slotted into a viewer, which looked a bit like a pair of binoculars and combined the images to make them appear 3D.
This slide shows the 1851 Great Exhibition at the Crystal Palace, the world’s first ‘theme park’.