Curated OER
Effect of Acid Rain on Plants
Students observe the effects of acid rain on plants through experimentation and research. Students research types of crops in their area. Students work in small groups to complete the experiments given, as well as write a report and...
PBS
Pbs Teachers: Scientific American: Unearthing Secret America: Nutrient Depletion
Investigate the change in American society and slavery with the advent of the agricultural innovation of crop rotation. Observe nutrient depletion as you germinate and grow nutrient-demanding seedlings.