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This activity will help students understand algal blooms. They will devise their own experiments to test the effects of nutrients on algal growth, or younger students may follow the steps outlined in a sample activity which is provided. Students will be reminded that they need to have controls and replicates in their experiments. As a result of this activity, students will come to understand the requirements ... Full description.
Grade level: Middle (6-8), High (9-12), College (13-14)
Resource type: Lab activity, Glossary
Subject: Environmental science, Biological oceanography
 
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Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Pedagogical help
Skills: Read (1)
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Pedagogically Annotated Collection     Browse collection
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While engaged in this activity students will explore phytoplankton, the food of tiny marine animals, particularly krill. Students will prepare a hay infusion in two identical glass aquarium tanks or a 1-liter glass jar and expose one to 24 hours of continuous light, and the other for only four hours during the school day, with all light blocked off by opaque material during the remaining hours. They ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Lab activity
Subject: Biological oceanography
 
Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Pedagogical help
Assessments: Read (1)
Related resources and collections
This resource is included in the following collections:
DLESE Community Collection (DCC)    Browse collection
Pedagogically Annotated Collection     Browse collection
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This lesson teaches students that traits are usually favored by natural selection only when they result in more reproductively successful offspring. Students go out onto the school lawn and play the role of birds, picking up toothpick stick worms which have been previously scattered in equal numbers of green-stained and unstained. Birds are chased away before the worm population drops too low. Back ... Full description.
Grade level: Middle (6-8), High (9-12)
Resource type: Lesson plan
Subject: Biology
 
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Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Pedagogical help
Misconceptions: Read (2)
Related resources and collections
This resource is included in the following collections:
DLESE Community Collection (DCC)    Browse collection
Pedagogically Annotated Collection     Browse collection