Curated OER
Potato chip Classification
Students create a dichotomous key using potato chips. For 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...
Curated OER
Classification of Cerealites
Middle schoolers create a dichotomous key. For this categorizing lesson, students create a dichotomous key for different types of cereal. Middle schoolers classify the cereal into groups such as flakes and cereal with holes. Students...
Curated OER
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...
NOAA
Vertebrates II
Mammals of the ocean unite! Or not. The 20th installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO) program investigates how warm-blooded marine mammals survive in water. In the class activity, learners use...
Curated OER
Water in the Biosphere
Environmental explorers examine the campus and take note of living organisms. Introduce them to the biosphere and the questions of the day: How much water can be found in the biosphere? A slide show helps you along, and even contains a...
Curated OER
All About Arthropods
Use a dichotomous key to classify these squirmy bugs. A paragraph provides fifth graders with some background knowledge on the animal kingdom, and explains how to use a branching key for classification. They then determine which bugs...
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
In a Class of Their Own
Students explore taxonomy and how birds are classified in this scientific system. They use this knowledge to create entries for a field guide to birds that can be used to identify different species.
Curated OER
Classification: Dichotomous Key
Students investigate the classification process and nomenclatures used for classifying organisms. They study dichotomous keys to identify organisms with 90% accuracy. Students organize information regarding the relatedness of species.
Curated OER
Seeds and Trees Lesson Plan
Students investigate various tree leaves and use a dichotomous key to classify the leaves. In this leaf classification lesson, students study various types of leaves and their Genus. Students record observations for each Genus.
Curated OER
Mystery Minerals
In this science worksheet, students complete a chart of mineral properties. Minerals are listed by number, and students perform various tests to determine luster, hardness, color, streak color, fracture type and cleavage type. They use a...
Curated OER
Student Dichotomous Key for Insects
In this student dichotomous key worksheet, students work in groups to create genus and species names for a list of insects assigned to them. Students then create a key for the new names given to their assigned list of insects.
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...
Curated OER
The Sky and the Dichotomous Key
Learners conduct observations and use a dichotomous key to identify clouds they see.
ARKive
Species Discovery
How many of your students know that even today new species are being found all over the globe? Introduce them to the amazing diversity our planet houses with a creative activity about animal variation and classification. They'll use a...
Kenan Fellows
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...
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...
Purdue University
Trees of the Midwest
All trees are not created equal. A set of three wildlife conservation lessons has learners examine the characteristics of individual trees. They look at the life cycle of the tree using a story and reference a field guide to identify...
Curated OER
Everybody Needs a Rock
Students, after making quantitative and qualitative observations of their rocks, construct a Venn diagram or dichotomous key to classify their rocks.
Kenan Fellows
Determining the Effects of a Golf Course on Stream Health
Do golf courses affect the water organisms in nearby streams and ponds? Small groups collect samples of water upstream and downstream from a golf course and analyze the macroinvertebrates found and the stream index values of...
CPO Science
Science Worksheets
If you need an array of worksheets to augment your science lessons, peruse a collection of assignments that is sure to fit your needs. With topics such as metric conversion, the scientific method, textbook features, research skills,...
Curated OER
Dichotomous Key
Learners develop an understanding of how a dichotomous key is organized. For this dichotomous lesson, student are put into small groups, and work together dividing their group of similar objects (buttons, paper clips, screws, keys...)...
Curated OER
Exploration of 'pill bugs'
Fifth graders define words. They create a dichotomous key. After carefully examining pill bugs, 5th graders record observations. They compare and contrast habitats of pillbugs.
Curated OER
Introduction To the Classification of Organisms
Students discuss how scientists classify organisms. In pairs, they analyze and label "specimens" of breakfast cereals in order to classify them into the correct group. They create a dichotomous key for several species of animals.