Using a Dichotomous Key
Eleventh graders use a dichotomous key and observation skills to classify a variety of trees. They research leaf types and how trees are classified, develop sketch and identification notebooks and record a number of identified trees.
11th Science 7 Views 36 Downloads
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
Regents High School Examination: Living Environment 2010
This exam touches upon every topic within the typical first year biology course.. A broad variety of question styles give high schoolers every opportunity to show what they know. Why start from scratch when a comprehensive final exam is...
9th - 12th Science
New Review Project Budburst - Citizen Science
Budburst is the emergence of new leaves on a tree in spring. This activity requires learners to identify trees, take careful observations of their tree and note phenological dates - the date of the first leaf, first leaf falling, first...
6th - 12th Science CCSS: Adaptable
Dichotomous Keys: Identification Achievement Unlocked
Do you know the difference between a mountain lion, puma, cougar, and Texas panther? They are all the same animal but have different names in different areas of the world, which is why we use scientific names for plants and animals. The...
7 mins 7th - 12th Science