Curated OER
Invasive Aquatic Plant Identification
Students observe aquatic plants and animals and identify their systems. In this plants and animals lesson plan, students compare systems of organisms and orally express how plants and animals rely on each other.
Curated OER
Soil Organisms
Pupils work together to collect soil samples from different locations. In the samples, they identify the macroorganisms and classify them. They identify the conditions that affect how macroorganisms grow. They also analyze and identify...
Curated OER
Sea Turtles
Students investigate eight different species of sea turtles while being involved in classroom lecture and video presentation. The characteristics used to identify sea turtles is taught to help students identify unknown species.
Curated OER
Native Plant Restoration Project
Students distinguish between exotic and native plant species. They work in groups in the field to restore a natural habitat. A class map is created to reflect their work in the field.
Curated OER
Lamarck Is Dead!
Students read Lamarck's obituary and respond to questions. They discuss the four laws from Lamarack's studies. Students apply this information to scientific theories in general.
Curated OER
Tree Identification
Students list four ways to identify trees. For this tree identification instructional activity, students use tree identification techniques such as leafs, bark, wood grain, soil type, and climate to create tables and graphs.
Curated OER
Benthic Macroinvertebrates
Students survey and describe a stream ecosystem. They sample the benthic macroinvertebrate populations of a given stream and determine community structure through the use of the Chandler Index and a species diversity index.
Texas Education Agency
Texas Gateway: Dichotomous Key
This tutorial is introduces students to the usage of the dichotomous key.
Biology Corner
The Biology Corner: Dichotomous Key
Here's a great dichotomous key for beginners. Use gremlin-like creatures to learn how to use more taxonomic keys.
Science Education Resource Center at Carleton College
Serc: Investigating Trees: Using a Dichotomous Key to Identify Local Tree Types
Using their own classification methods students will identify the types of trees found around their school and neighborhoods. Students will then present their classification methods to the class. Later students will use dichotomous tree...
Science Education Resource Center at Carleton College
Serc: Creation of Dichotomous Keys From a Bio Blitz
An outdoor lab where students investigate the environment and decide a method of survey to identify trees in their area. To finish the exercise they will create a dichotomous key of the ten they identified.
Other
O. Henry Middle School: Texas Native Plant Dichotomous Key [Pdf]
A key for classifying Texas native plants. Observe the characteristics of a plant and make choices as you work through the key to find out its binomial name.
Science Education Resource Center at Carleton College
Serc: Introduction to Dichotomous Keys
This lesson serves as an introduction to the classification of plants and animals or trees. Students will investigate how to classify objects based on their similarities and differences. They will use technical writing to explain their...
Other
Villanova University: Constructing a Dichotomous Key
This exercise provides information on how to construct a dichotomous key using geometrical shapes. Another exercise shows how a key can be constructed based on traits in a classroom group.
Other
Siemens Science Day: Life Science: The Key to It All
In this hands-on science activity, students will create their own unique creatures as well as dichotomous keys so that classmates can identify the creature.
Oregon State University
Oregon State University: Dichotomous Key
An excellent starting point. Get a good description of what the dichotomous key for tree identification is and then directions for using it to identify trees.
Science Education Resource Center at Carleton College
Serc: Using and Creating a Dichotomous Key
Middle schoolers will investigate classification through a sorting activity and discus real-life evidence of classifying objects.
Environmental Education for Kids
Eek!: Water Critter Key Life in a Pond
Use this interactive key to identify a critter that you found in the water. Expand it to full-screen for the best experience.
Other
Science4 Us: Materials
Students use a dichotomous key to sort materials into natural and man-made and sort further using the adjectives rough and smooth; this activity builds both science and language skills as students classify materials and build deeper...
PBS
Nova Teachers: Treasures of the Great Barrier Reef: Classroom Activity
This activity involves having students classify nine fish according to various physical characteristics. They can also develop a key to identify the fish.
PBS
Pbs Teachers: Jewel of the Earth
Collect and analyze organisms and use a dichotomous key to identify and classify the organisms. Research the evolutionary history of organisms.
Other
Alice Ferguson Foundation: Bridging the Watershed: Plant Identification
Use this interactive guide to identify plants based on their leaves. For each step, you are given two choices, and you continue down the branches until you discover a plant's name.
Science Education Resource Center at Carleton College
Serc: A Student Produced Field Guide to Neighborhood Trees
During this project, students will be working cooperatively to create a field guide of trees in the neighborhood near the school. Students will make observations of trees near the school. They will then learn about tree anatomy and...
Science Education Resource Center at Carleton College
Serc: Identifying Macroinvertebrates to Determine Health of Aquatic Ecosystem
In this hands on activity students will learn how to identify basic macroinvertebrate using a dichotomous key. They will complete a chart used by the MPCA and we will discuss why an ecosystem may not be healthy or not.
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