Learning Experience 4: Invertebrate Population



For each pair of students:

2 Student Activity Sheets for Learning Experience 4

2 triple lens magnifiers

Aquarium net

Reference books/internet

For the class:

5 four liter containers

Kitchen sieve

Duct tape

2 large dowels or broom handles

Empty soup can or small saucepan

Meter stick


Read the background information in the Ecosystems Teacher’s Manual. (Please see PDF)

Have students use the materials provided to create a dip net and bottom scraper for use in this Learning Experience. See page 15 in background information (Please see PDF) for description on how to create these tools. Review with students on how to use the triple lens magnifiers. Background information on how to use them is also found in the Teacher’s manual. (Please see PDF)

The activity sheet for this Learning Experience will need to be duplicated for each invertebrate found in samples.

Evaluation Strategy:

Students will collect invertebrates at the aquatic site and research the types of invertebrates found.





Objective: Students will collect and identify invertebrate samples at the aquatic site and then research invertebrates identified.

Session 1

In this learning experience, students will be examining invertebrate populations found at their aquatic site. Students will use aquarium net, dip net, and bottom scraper to collect the invertebrate samples. Demonstrate how to use each piece of equipment.

Once out at the aquatic site, student pairs can use their aquarium net to look for invertebrates along the water’s edge.

Students can also take turns using the dip net and the bottom scraper to collect invertebrate samples. To use the dip net, scoop across the water’s surface, along the sediment surface, and under ledges. All collected invertebrates should be placed in the live four liter containers. (Remember: water from the site should be poured into containers before adding animals).

Scoop sediment from the bottom of the aquatic site and pour it into the dip net. Pour water from the aquatic site through the net to wash away sediment and preserving invertebrates buried in sediment.

Session 2

Use a triple lens magnifier to distinguish features of the invertebrates collected. Draw a picture of invertebrates found on the Student Activity Sheet for Learning Experience 4. After identifying the invertebrates, use field guides, the internet, and other reference books to research information of each invertebrate found. Students can then report their research to the class.

STUDENT ACTIVITY SHEET for Learning Experience 4



Draw an invertebrate.

Name of invertebrate _______________________________________________

Information on invertebrate:











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