Students determine the effects of an increase of the amount of nitrate and phosphate levels on the growth of algae. the development of a hypothesis is encouraged and students proceed to a conclusion based on their results.

If you need a comprehensive review of the development of Earth's atmosphere through the ages, then this is for you! The presentation starts with a introduction to theories of planet formation and initial distribution of isotopes in the...

Examine cyanobacteria cells as an example of prokaryotes and several other alga as examples of eukaryotes. Future biologists compare the two and notice the absence of nuclei in prokaryotes. These are classic activities for this purpose,...

Explore the causes of ozone depletion and the effect on plankton, algae, plants, amphibians, and humans. Learn how the Montreal Protocol has possibly helped reverse the decline of the ozone layer. Warning: photos of skin and eye...

Our scholarly friends head to the lake to go fishing and are unpleasantly surprised by the algae filling the water. They talk about primary and secondary succession as different ways that ecosystems are changed. Show the short video,...

Students compare and evaluate the world's different seaweeds.  In this investigative activity students study seaweed and the harvesting of it.  They then interpret the data collected and graph the seaweed production. 

Students explore what a food web is. In this science instructional activity, students examine how nutrients and other pollutants enter a lake and play a food web game whereby students pretend they are either zooplankton,...

Learners explore limu in their everyday lives. In this science lesson, students identify various uses of limu and discuss common household products that contain limu. Learners participate in a limu party.

Fourth graders explore the importance of oceans in supporting life on earth and identify resources obtained from the ocean.

For this protists worksheet, students will review the different types of protists and the different stages of the protist life cycle. This worksheet has 10 matching questions.

Students explore limu diversity. In this ocean ecosystem lesson, students classify limu according to its physical properties. Students work in small groups to generate scientific observations and sort limu by characteristics.

Learners identify the difference between eukaryote and prokaryotes and examine the structure of bacteria.  In this bacteria activity students examine the different ways that bacteria are classified through an activity. 

In this fungus worksheet, students identify different types of fungus given certain characteristics. Students are challenged to write their own fungus question.

In this protists worksheet, students will use idea maps about plantlike protist and funguslike protist characteristics to complete 4 short answer questions.

In this lake instructional activity, students search for 13 vocabulary words associated with a lake such as river, watershed, groundwater, erosion, and shoreline.

Students identify some consumer goods that come from the ocean. They classify these items into groups, identify their source, and calculate the cost of buying such goods.

Students compare water quality of different sources. They test water samples for odor, phosphates, pH, bacteria, and dissolved solids. they fill out a data table and answer questions about their findings.

Fourth graders explore relationships among organisms involved in ocean food chains to investigate interdependence of the organisms.

In this biology learning exercise, students locate and identify various vocabulary terms related to the life sciences. There are ten words located in the puzzle.  

Students explore limu. In this cross curiculum botany and art project, students view a limu-picking film and then collect several species of limu. Students follow a sequence of instructions using limu, card stock and wax paper to create...

More than 200,000 species of protists exist, living on land and in water around the planet. Scholars view the diversity of protists in an interesting presentation. It divides protists into three groups: animal-like protists, plant-like...

How does water pollution affect the environment? Provide your class with the resources to answer this question as they learn about eutrophication and ecosystem changes. Over two weeks, they simulate the effects of pollution on the...

Why do scientists rely on drawings rather than just photographs of their research studies? The lesson introduces drawings of microscopic organisms and the importance of accuracy. Young artists draw organisms and learn why focus and...

Learners investigate marine life by researching aquatic organisms on the Internet. In this oceanography lesson, students monitor algae and animals of the ocean by identifying their population and habitat on data sheet ID cards. Learners...