Cold Spring Harbor Laboratory
Development Balances Cell Growth and Death
Cells demonstrate a life cycle like other living things, but what if death was no longer part of the cycle? Learn about the important balance requiring death to continue functioning. An online interactive introduces a group of scientists...
Curated OER
Sponges, Cnidarians, Flatworms, and Roundworms
In this simple animals worksheet, students review the characteristics of sponges, cnidarians, flatworms, and roundworms. This worksheet has 12 matching questions.
Biology Junction
Flatworms
In this flatworms instructional activity, high schoolers identify and color the different parts of a flatworm. They complete 14 short answer questions related to the topic.
Biology Junction
Introduction to Animals
Out of all animals, elephants alone lack the ability to jump. Scholars learn all about animals using a presentation full of fun examples. It describes different types of animals, the biological similarities and differences between...
Curated OER
The Three Worm Phyla
Ninth graders examine the three worm phyla. In this classification lesson, 9th graders observe, compare and contrast the planarian, tapeworm, and fluke.