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Comparative anatomy prevails in the lesson exploring diversity among invertebrates. Biologists examine physical characteristics of an earthworm from phylum annelida and a meal worm from phylum insecta. They also inspect a cricket and a crayfish, both arthropods, but from different classes. Plenty of direction, space for recording observations, and follow-up questions make this handout a thorough investigation of invertebrates for middle or high school biology classes, especially when studying classification.
Students are introduced to the classification system of animals. In groups, they set up an aquarium in which they must maintain throughout the year. They also observe earthworms and how they react to various stimuli and research the characteristics of arthropods. To end the lesson, they focus on one phylum of animals and present their information to the class.
Students practice classifying animals in the proper phylum and writing proper scientific names. They create a stair grid to classify each animal they see during a field trip to the Minnesota Zoo. They use this grid to identify the primary characteristics for several animal phyla.
The author of this presentation elaborates on the details of insect classification, information apparently required to become a master gardener in the horticulture program at Oregon State University. Though lengthy (110 slides), it is an outstanding collection of photos, graphs, and diagrams to educate the viewer in basic entomology. Not only could this be used as a resource for horticulture classes, it can even stand as an introduction to a college entomology course.
Students use a dichotomous key to classify various vertebrate jar speciments into classes. They examine the speciments for general characteristics of each class and fill in a corresponding chart and then complete a few final assessment questions to demonstrate understanding.
Students use diagrams to compare structural differences that taxonomists use to classify animals. In this classification lesson plan, students compare structures of different species from given diagrams. In one diagram they identify the phylum of each species, in another they identify the class of each species, in another they identify the order of each species and finally the family names of each species.
Five pages provide thorough coverage of three protozoans: euglena, amoebae, and paramecia. For each, junior biologists read factual text, label the organism, and write answers to several questions. This neatly organized assignment is five pages long and makes an ideal preparation for examining these protists in the laboratory.