How are bubbles made? A simple experiment involving the construction of bubbles is available in this lab learning exercise. A fun activity prompts pairs of learners to use dish soap in order to make bubbles. They keep track of the size...

This is a "tour" of portrait paintings done by 18th Century French painters, Jean Simeon Chardin, Nicolas de Largilliere, Jean-Marc Nattier, Jean-Baptiste Greuze, and Jean-Antoine Houdon. There are ten portraits, each with an extensive...