Long before modern labor unions, guilds worked to ensure that workers had a fair wage. But, in medieval Europe, they also cooperated with the government. Using a simulation and primary source analysis, young scholars become hatters in...

Bubble, bubble, boil and trouble! What causes common substances like baking soda and vinegar to react the way they do? Welcome your junior chemists to the wonders of acid-base chemistry using a comprehensive and fun...

The radical reactions of polymers seems abstract to many pupils, but this lesson turns them into a fun building game. Scholars use dice and building pieces to build polymers. Then, they determine the theoretical and experimental weight...