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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...
Curated OER
"Finding Your Sweet Tooth"--An Introduction to the Dichotomous Key
Sixth graders classify candy according to observable characteristics. They use a dichotomous key to identify their bag of "treats." Thus, describe how dichotomous keys help to the identifying of organisms. Design a self-generated...
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Classification, Keys, and Phylogenetci Trees
Students analyze relationships about animals and create a model of classifications based on both the similarities and the differences. They also discuss a dichotomous key before they create a cladograph using different types of candy.
Curated OER
Dichotomous Keys
Third graders practice using dichotomous keys. They discover why scientists use them and why it is important to classify animals. They use candy to practice classifying objects and move on to classifying animals.
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Dichotomous Chips
Students create a dichotomous key to different varieties of potato chips. In small groups, they observe and record characteristics of the potato chips to use in the key. They switch keys with another group to see if they can identify an...
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Potato chip Classification
Students create a dichotomous key using potato chips. In this classification lesson, students sort potato chips into groups based on observable characteristics. They record their results to create a dichotomous key in preparation for...
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Decidedly Different
Fifth graders inquire as to why scientists use observable characteristics, how they sort the characteristics, and why they do so. They write journal entries to be used throughout this unit.
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Seasonal Science: Spring Life Science Activities
Spring into science with these great lesson ideas involving butterflies.
Curated OER
Classifying Conundrum
Fourth graders identify plant characteristics from different environments and communicate that information in different ways. They use a simple scheme to classify Utah plants and animals and make observations and record them in a...