Publication No. 11047
Super Value Kit
Materials Included In Kit
Identification Sheet Sets, 5
Macroinvertebrate Card Decks, 5
Remind students to wash their hands thoroughly with soap and water before leaving the laboratory.
The materials in this activity may be saved and reused for future classes.
Correlation to Next Generation Science Standards (NGSS)†
Science & Engineering PracticesPlanning and carrying out investigations
Engaging in argument from evidence
Disciplinary Core IdeasMS-LS1.B: Growth and Development of Organisms
MS-LS1.A: Structure and Function
MS-LS2.C: Ecosystem Dynamics, Functioning, and Resilience
HS-LS1.A: Structure and Function
HS-LS1.B: Growth and Development of Organisms
HS-LS2.C: Ecosystem Dynamics, Functioning, and Resilience
Structure and function
MS-LS1-5. Construct a scientific explanation based on evidence for how environmental and genetic factors influence the growth of organisms.
Answers to Questions
Macroinvertebrate Identification Sheet Set Key
EPA—Invertebrates as Biological Indicators, http://www.epa.gov/bioindicators/html/invertebrate.html (accessed June 2010).
What are those insects and other organisms in the stream? In this activity, twenty illustrated aquatic macroinvertebrates will be identified using a dichotomous key.
Macroinvertebrates are organisms that have no backbone and can be seen without using a microscope. Aquatic macroinvertebrates are the organisms found in lakes, streams, ponds and other natural water sources. Macroinvertebrate life cycles go from the egg to adult form and can undergo either complete or incomplete metamorphosis. Complete metamorphosis has four stages—egg, larvae, pupa and adult. Macroinvertebrates that undergo complete metamorphosis include true beetles, flies and caddisflies. Many of these organisms are aquatic in the egg and larval stages and terrestrial in the adult form. Incomplete metamorphosis has three stages—egg, nymph and adult. Macroinvertebrates that undergo incomplete metamorphosis include mayflies, stoneflies, and dragonflies. Many of these organisms, such as dragonflies, also do not live directly in water as adults. Other species such as backswimmers and water striders spend their entire lives in the water. The length of the life cycle of a macroinvertebrate can vary from less than two weeks for some midges to two years or more for some dragonflies and stoneflies.
In this activity, 20 illustrated macroinvertebrates will be identified using a dichotomous key and a set of organism cards to learn more about the types of macroinvertebrates in our natural water sources.
Macroinvertebrate Card Deck
Identification Sheet Set
Although this this activity is considered nonhazardous, please use all classroom or laboratory safety guidelines.
Student Worksheet PDF