Species interactions in ecosystems come into focus as Grade 6 students investigate how living things affect one another across forest, grassland, and freshwater environments. This NGSS science learning stations activity develops students' ability to identify ecological relationships from evidence, compare the conditions that influence them, and predict how interactions may change when ecosystems change.

Rather than treating ecological vocabulary as isolated definitions, students examine species interactions in context. They work with evidence about mutualism, competition, predation, and parasitism, connecting each relationship to the resources, habitats, and characteristics of the organisms involved.

Investigating Four Types of Species Interactions

The activity focuses on four important ecological relationships:

• Mutualism: Identify interactions in which both species benefit.
• Competition: Examine how organisms may compete for limited resources.
• Predation: Recognize relationships in which one organism hunts another.
• Parasitism: Identify interactions in which one organism benefits while its host is harmed.

Students also compare how habitats, available resources, and species traits influence these relationships in different ecosystems. Using observations and evidence, they consider how an environmental change or a shift in community composition could alter interactions among organisms.

What Is Included

• Station recording sheet: A student recording resource for capturing information gathered during the activity.
• Station wrap-up: A concluding activity for bringing together ideas from the station work.
• Station cards: Materials presenting the ecosystem interaction investigations for students to explore.
• Separate answer key PDF: A supporting answer resource for teacher use.
• Teacher Guide: Included in the Answer Key PDF, with Learning Objectives, Teaching Tips, Discussion Questions, and Common Mistakes.

How to Use the Learning Stations

Place the station cards around the classroom and have small groups begin at different stations. Students examine each card, use the recording sheet to capture relevant information, and rotate through the stations until they have visited them all. Finish with a class discussion comparing the relationships students identified and the ecosystem conditions that influence them.

This format provides a practical way to structure collaborative science work while giving students opportunities to support their thinking with observations and species characteristics. The recording sheet keeps student responses organized, and the wrap-up provides a natural transition from individual station work to whole-class discussion.

NGSS Science for Grade 6

Designed for middle school ecosystem instruction, this resource is identified with NGSS standard MS-LS2-2. It is suitable for lessons on ecological relationships, ecosystem dynamics, and how organisms interact with one another and their environments. Use it as a learning stations lesson or as part of a broader unit on ecosystems and species interactions.

With student recording materials, station cards, a wrap-up activity, and a separate PDF containing the answer key and teacher guidance, this resource brings the investigation and teacher support together in one classroom-ready package.