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In this species learning exercise, students use a dichotomous key to identify the 8 different species of "Norns," a fictitious animal group.
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Use of Dichotomous Keys to Identify Stream Organisms
What kind of organisms are living in the stream? After an explanation on how to use a dichotomous key, groups of three to four use the keys to identify macroinvertebrates from a local freshwater stream. Using the the concept of Stream...
8th - 12th Science
Determining Stream Health by the Diversity and Types of Benthic Organisms
How diverse are the benthic organisms found in local streams? Using the information learned in previous lessons on identification of macroinvertebrates and on calculating stream index values, groups determine the health of local streams....
8th - 12th Science
St. Lawrence River Organisms and Environment
Two films are suggested as initiating activities, but you would have to locate them. Nevertheless, there is plenty of material here to provide your biology or ecology classes with a complete mini-unit on freshwater fish species in the...
7th - 8th Science
Introducing the Use of Dichotomous Keys to Students
Students are introduced to the use of dichotomous keys as a simple means of beginning scientific observations in nature. They comprehend how to use a dichotomous key. Students distinguish characteristics of a group of organisms. They...
6th - 8th Science
New Review Impacts of Climate on Forest Succession
Part two in a series of four explores the effects of climate on succession or the changing of plant species in a forest. Groups review how to identify trees and then spend a day in the field collecting extensive data on trees to...
10th - 12th Science CCSS: Adaptable