Curated OER
The Abiotic Limits to Purple Loosestrife Growth
Learners investigate the effects of soil temperature, water availability, photo period and other variables of the growth of purple loosestrife. They observe the growing conditions of plants and alter them by adding water, isolating the...
Science Education Resource Center at Carleton College
Serc: Growing Lima Beans: Do We Really Need Dirt?
Students investigate different growth mediums for a lima bean seed: a wet paper towel and a paper cup with soil.