Products tagged with Tedco

The Light Crystal Prism will fascinate children by demonstrating the rainbow of colors hidden in natural sunlight. Bevel cut to reflect images into wonderful kaleidoscopic patterns.

Experience this sphere powered by the sun! The vanes in the Radiometer alternate in dark and light colors. When the light strikes these vanes it transfers heat to each one, but not at the same degree.

Two 2 liter bottles plus one tornado tube equals one tornado in a bottle! Great hands on tool for a demonstration of vortex action.

It’s a calming liquid timer within your writing pen! Can make writing tasks a little less stressful and more enjoyable! Watch the mesmerizing colored droplets float to the bottom as you write, flip over and do it again!