The advent of computers in the classroom has made virtual field trips and science labs a reality. But not every teacher is wired, and not every educator is satisfied with flat-screen encounters for their students, especially when environmental science is the subject at hand. The case can be made that a single living organism to observe and care for can be more useful to a teacher than a simulated jungle. Here is a potential menagerie to consider -- click on the live links for product purchase and lesson plans or ideas.

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Click here for green educational resources [1]

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Credit: © Carolina Biological Supply Company

Rootin' Around

Supplanting the sawed-off, dirt-packed soda bottle, the gel-based Plantarium Garden Lab allows students to watch plants grow above and below the surface in perfect transparence.

Product: Fat Brain Toys [4]

Credit: Getty Images

Luna Moths

These wan, four-eyed, nocturnal beauties with no feeding ability have a life span of less than a week, so there may be a few tears. At the same time, these insects will start a delicate and important discussion about impermanence, biodiversity, and nature's mysterious ways.

Product: Carolina Biological Supply Company [5]
Lesson Plan: All About Luna Moths [6]

Credit: Getty Images

Meet the Beetles

If your school budget or policy does not allow for living organisms, fear not; Cornell University's Beetle Science page is a great alternative. Considering the fun fact that one of every five living species is a beetle, it makes sense to invite a virtual band of them in.

Lesson Ideas: Beetle Science [7]

Credit: © Carolina Biological Supply Company.

Frog Eggs to Frog Legs

At the exciting rate that these eggs become tadpoles and then full-fledged frogs, even the youngest students with the shortest attention spans will thrill at the process unfolding in their classroom aquarium.

Product: Carolina Biological Supply Company [5]
Lesson Plan: Frogs [8]

Credit: © Carolina Biological Supply Company.

Tub o' Worms

As this 14-gallon vermicomposter fills up with organic refuse, it has ample space for your students' attention while the worms process waste into rich soil components. The tub comes complete with bedding, redworms, and the activity book Worms Eat Our Garbage.

Product: Carolina Biological Supply Company [5]

Credit: Getty Images

Mushroom Modules

Neither plant nor animal, fungus is a kingdom unto itself, as worthy of classroom representation as a bean sprout or a tadpole.

Product: Gourmet Mushrooms Inc. [9]
Lesson Plan: Educator's Mushroom Growth Kit [10]

Credit: Getty Images

Leafy Predators

Will students be interested in plants that trap insects, occasionally using fairly gruesome techniques? Might they be fascinated by the nepenthes -- a.k.a. the carnivorous pitcher plant -- known to trap even rodents and birds? Yes, and yes.

Product: Carolina Biological Supply Company [5]
Lesson Ideas: International Carnivorous Plant Society [11]

Credit: Veer

Ta-Ta-Tarantulas?

Who better to undo a student's (or teacher's) teeth-chattering arachnophobia than Rosie, the Chilean rose-haired tarantula, one of the most docile of the giant spiders?

Product: Carolina Biological Supply Company [5]
Lesson Plan: Talkin' About Tarantulas [12]

Credit: © Carolina Biological Supply Company.

Ant Farm of the Future

Based on a 2003 NASA space shuttle experiment, this ant farm redefines "lunar colony." The futuristic version of the beloved green plastic ranch will entice budding entomologists with modern sensibilities.

Product: Carolina Biological Supply Company [5]
Lesson Plan: The Secret Lives of Ants [13]