Discusses the characteristics of four different types of algae.

In this lesson pupils learn about how algae is used in the food they eat.

Describes the parts, structure, and the several methods of reproduction of spirogyra, a type of green algae.

Today, various species of marine algae provide not only food but also extracts used in numerous pharmaceutical, cosmetic, and industrial applications.

Illustration of brown, red, and green alga.

Describes the characteristics and methods of reproduction of Volvox, a type of green algae.

Provides information about Volvox, a type of green algae. Discusses appearance, habitat, method of reproduction, and its food sources.

This illustrated website features facts about lakes and ponds and their special place in geography, natural history, and as a biome.

A video and a short multiple-choice quiz on the natural changes that take place in an ecosystem, and the negative impact humans can have on ecosystems.

Present evidence suggests that blue-green algae, and possibly other primitive microbial forms of life, were flourishing 3 billion years ago. This brackets the origin of life to within one billion years. Learn more here about...

Provides information about Spirogyra, a type of algae. Discusses characteristics, classification, cell structure, method of reproduction, and life cycle.

Describes the classification, characteristics, and method of reproduction of Volvox, a green algal species.

[Free Registration/Login may be required to access all resource tools.] There is good evidence that life has probably existed on Earth for most of Earth's history. Fossils of blue-green algae found in Australia are the oldest fossils of...

[Free Registration/Login Required] The abcteach directory contains sample pages from their pond unit for non-members. Handouts are in PDF format.

RCN offers information about plants, including the evolution and classification of different groups.

At this site from the Universite de Montreal, you can click on the name or picture to see images & data on each of the protozoa. Elementary teachers will need to guide their students through this information.

Anusuya Willis explains how cyanobacteria, simple organisms that don't even have nuclei or any other organelles, wrote a pivotal chapter in the story of life on Earth. [4:14]

For good information about marine flora, go to this site from the Monterey Bay Aquarium Research Institute. It provides details about different types of seaweeds and phytoplankton. It also contains a photo gallery.

This site from Suzy's World, which is a personal site from Suzy Cato, explores what evolution is, and how long there has been life on earth. Content includes fun facts, a great experiment, and a classroom activity.

Describes how a single Volvox moves using its two flagella and how it moves in coordination with a whole colony of Volvox.

Site describes process of photosynthesis, including role of pigment molecules, electron transport, ATP synthesis, and carbohydrate synthesis. Includes links to illustrative graphics.