Curated OER
Light and Temperature Interaction
The colors most noticed and characteristic of particular weather patterns are listed on each of these slides. The reasons for each chemical changing the appearance of leaves are given and the effect of particular climate changes...
Curated OER
Stomata: Microscopic Openings that Let Plants Breathe
Young scholars participate in a lab experiment to observe and measure the opening and closing of stomata. They focus on photoperiod, locate and identify stomata on a leaf and explain the role of stomata in the daily functioning of a plant.
Curated OER
Reasons for Seasons
Students track photoperiod (daylight hours) over time and predict how daylight change during different seasons. This helps build their understanding that ever-changing daylight is the driving force for migrations and all other seasonal...
Curated OER
Hickory Dickory Dock: The Biological Clock
Young scholars investigate the effect of day length on animal migrations. They view a Powerpoint presentation, identify their own personal migrations and cues, answer discussion questions, and test a hypothesis about seasons.
University of Arizona
Wendy Moore/how Did Flightlessness Evolve?
Discusses the reasons flightlessness evolves in some insects depending on their location.