Curated OER
Species Identification Using Dichotomous Keys
To help your students unlock the wonderful world of living things, teach them to use a dichotomous key.
Captain Planet Foundation
Which Plant Is Which?
Learn about dichotomous keys, plant identification, and how to care for the planet with a lesson that includes several hands-on and innovative activities. Kids go on a plant scavenger hunt and classify the plants that they find...
Curated OER
Dichotomous Keys
Students define the word dichotomous and explain why a dichotomous key is a useful tool in identifying different species. Then they look up words they are unfamiliar with or mollusk reference books so students can
learn the names of...
Curated OER
Creating a Dichotomous Key for Amphibians
Learners are introduced to the purpose of dichotomous keys and create one together as a class. In groups, they use a digital atlas to examine the different types of amphibians in Idaho. Using this information, they make their own...
Curated OER
Classification Schemes
Junior biologists journey through the hiearchy of living things with these activites. Using a dichotomous key, they identify common algae, plants, and fish. They design their own key for a mixture of seeds and a collection of...
Curated OER
Dichotomous Keys
Students utilize dichotomous keys to identify trees in their schools. In this ecological identification lesson, students practice creating dichotomous keys based on simple subjects such as hair color or sex of a person. Students use...
Curated OER
Dichotomous Key for Identifying Pine Trees
Middle schoolers identify the species of pine trees that are found in their area. They use unlabeled "mystery" samples and a dichotomous key to identify the pine trees to species. After identification, they use a field guide to answer...
Curated OER
Name that plant!
What is a dichotomous key? When your kids ask, hand them a learning exercise like this one, to explain it. They use the key to identify four different trees, based on the budding twigs they've produced. Tip: Have learners extend this...
Curated OER
Do You Have the Key?
Students practice using a dichotomous key. In this classification activity, students read an article about scientific exploration and identification of new species. They use a dichotomous key to identify objects and create their own key.
Curated OER
What's That Tree?
Fifth graders identify trees along a nature trail. Using a dichotomous key, 5th graders answer questions to aid in their identification of trees along a specified nature trail. Observations are recorded in their science journals. Sample...
Curated OER
Reptile Identification Exercise
Students are shown how to use the Digital Atlas of Idaho. They use a dichotomous key to identify species of Idaho reptiles. Students describe some basic life characteristics of reptiles. They use th visual key to identify the species...
Curated OER
Using and Creating a Dichotomous Key
Students assess what a dichotomous key is and how it identifies objects in a group through a process of answering yes/no-type questions about certain objects. They examine an interactive graphic key on sea turtles and then create their...
Chicago Botanic Garden
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...
Curated OER
Keys To Trees: Dichotomous Tree Identification
Ninth graders gather samples of different tree leaves in their neighborhoods, and on school grounds, and identify several species of common South Carolina trees using leaf and growth characteristics with aid of dichotomous key.
Michigan Sea Grant
Fish Identification
Using a dichotomous key, pupils identify characteristics of fish who live in the Great Lakes and explain how these features help them survive. In small groups, class members discover what features scientists consider important and...
Michigan State University
Bug Lyphe!
Introduce ecology classes to biodiversity and interdependence in ecosystems with a PowerPoint presentation. Then, they get up-close and personal with the invertebrate world by collecting insects, classifying them, and graphing their...
Curated OER
Science: Her-bariums Galore!
Learners collect and identify plant species and construct herbariums both at school and at home. By gathering data from both locales, they draw conclusions and make predictions about plant diversity. Upon completion of the exercises,...
Curated OER
Freshwater Fish Anatomy & Taxonomy
Tenth graders use a classification key to identify organisms. In this classification lesson students identify freshwater species of fish and document their observations.
Curated OER
Species and Specimens: Exploring Local Biodiversity
Students practice skills essential to all scientific investigation: carefully observing and collecting data. They become field biologists in a series of hands-on activities to collect and identify specimens, and survey and calculate the...
Curated OER
Jewel of the Earth
Students investigate several organisms, set sticky traps to collect them, and attempt to identify and classify them using a variety of sources. The origins of the organisms are traced and their adaptive features examined.
Curated OER
Tree Identification
High schoolers list four ways to identify trees. In 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
Biodiversity
In this biodiversity worksheet, students sort and classify animals by their observable features using a dichotomous key. Students then respond to questions about complete and incomplete metamorphosis.
Curated OER
Create a Dichotomous Key of Idaho Reptiles
Students use the reptile section of the Digital Atlas of Idaho. They make a dichotomous key and decide on what defining characteristics they can use to distinguish between species. They hone their observation skills and recognize...
Curated OER
Tree Identification
Students are introduced to the characteristics of trees and different techniques to identify them. They distinguish between a deciduous and a coniferous tree. Students describe at least four characteristics used to identify trees. They...