Insects, and other invertebrates outnumber vertebrates—segmented-legs down! The first in a five-part series of videos from an Invertebrates series introduces these organisms in all their spineless glory. Each invertebrate phyla takes the...

The mouth of a flatworm appears under the middle of the body rather than near the eyes or head. A video shares the unique body plan of flatworms. The bilateral body plan includes no circulatory system, but possibly some of the first...

Most animals follow a bilateral body plan. The Shape of Life series presents a short video on why this body plan survived across so many different species. The narrator explains the benefits of symmetry, stereo senses, and more....

Flatworms evolved and developed the first bilateral body plan. These hermaphroditic animals with no circulatory system star in an informative video. Scholars learn about flatworms' place in the evolutionary tree, how they hunted, and...

From large to small, show your class how to organize them all! Included within the guide is everything you need to take their knowledge of classification from the cellular to the species level. The worksheets focus on building vocabulary...

All humans begin as one cell and through mitosis, develop into an organism made of millions of cells, each specialized to keep people alive. The narrator of this short video explains the process by which embryos grow from a morula to a...

No matter which way you slice it, the definition of symmetry might not be clear. The narrator of the video reflects on its true meaning as shapes, plants, and animals dance onstage for a captivated cartoon audience. Your class will be...

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...

Check this out! Part two of a set of slide shows about biological classification; this one zooms in on kindgom plantae and kingdom animalia. Attractive and informational slides cover details that make this most appropriate for advanced...

Upper graders identify symmetry in nature. In this geometry lesson, pupils define the word "symmetry" and demonstrate it by folding paper. They use a worksheet embedded in the plan to find symmetry in nature.

Students analyze the similarities in different species. This lesson is part of a multi-segmented unit on the diversity of life. In this segment, students classify shoes to mimic the scientific categories of the classification system.

Students explore symmetry. In this geometry lesson, student identify and define bilateral symmetry, radial symmetry, pentagonal symmetry, hexagonal symmetry, and cubic symmetry. Students construct examples of these types of symmetry and...

Students reflect images and determine their symmetry.  In this reflecting images and determining their symmetry lesson, students determine if various pictures/objects have mirror or bilateral symmetry.  Students reflect objects two or...

Students explore the concept of symmetry. In this symmetry lesson plan, students fine the line of symmetry for bilateral designs. Students make their own designs and determine if their design has bilateral symmetry. Students find...

For this problem solving worksheet, 4th graders figure out how many lines of symmetry 6 Greek alphabet letters have. Students write each number and draw the line or lines on the lines provided.

In this animal symmetry worksheet, students label organisms by the type of body symmetry that organism has. Then students draw an example of each type of symmetry. This worksheet has 3 drawings and 21 fill in the blank questions.

In this starfish worksheet, students read about the natural history of starfish. Students identify and label the external parts of the starfish and then complete 10 short answer questions.

In this animal symmetry worksheet, students compare and contrast organisms that have bilateral symmetry and radial symmetry. This worksheet has 15 fill in the blank statements.

In this mollusks worksheet, students will review the characteristics of the three major classes of mollusks: gastropods, bivalves, and cephalopods. This worksheet has 17 matching, 6 short answer, 9 fill in the blank, and 4 true or false...

In this flatworms instructional activity, students will review the characteristics of planarians, tapeworms, and flukes. This instructional activity has 5 true or false, 2 short answer, and 7 matching questions.

In this animal instructional activity, students determine which characteristic of an animal matches the given statement. Students describe illustrations of animals using the terms radial symmetry, bilateral symmetry, and no symmetry.

In this biology worksheet, students label parts of a phylogenetic tree and differentiate between bilateral symmetry and radial symmetry.

Young scholars discuss patterns and bilateeral symmetry. In groups, they design a bilaterally symmetric pattern using fabric squares--each student in the group creating one 12x12-inch square. Then all groups put their squares into one...

Students are introduced to the unit on the importance of diversity of life and the role that interdependence plays in our worlds. this is part of a multi-lesson unit on the diversity of life.