The "Poker Chip Model" activity, developed by Great Lakes Bioenergy, uses household items to help students understand where the majority of earth's carbon is located and how it moves from place to place.
Investigation, Stand-Alone Activity | Elementary, Middle School, High School
In this simple experiment, students investigate the process of fermentation in resealable bags with bakers yeast, warm water and various sources of plant sugar. Students observe and measure evidence of the chemical changes associated with fermentation: bag inflation (CO2) and indicators of ethanol production. Younger students can observe fermentation in a single bag, while older students can create multiple set-ups to compare how yeast ferments sugar, starch and cellulose-based biomass options.