This is a fun lab for students to explore the process of osmosis. They love this lab because they get to use Gummy Bears (or Gummy Worms if you like or both), even though they cannot eat them (I usually buy extra gummy bears so they can eat them the next day when they do their second observations) and they get to use the lab equipment, such as the Triple Beam Balance. This activity includes a graph so they can create a bar graph to compare the percent changes that occur to the length, width, and