Project Learning Tree (PLT)

Graphic of Minnesota PLT logoPLT's Secondary Modules

The secondary modules give middle and high school students opportunities to apply scientific process and higher order skills, investigate topics in depth, and conduct service learning action projects. PLT's secondary modules are designed for middle and high school educators. Each module offers eight in-depth activities, focused on specific topics. (Biodiversity has three in-depth activities.)

The only way to get any of the secondary modules is to attend a PLT workshop.


SE Forests and Climate Change Contains 14 in-depth activities on how climate change affects forests and people. Although developed for educators in the southeastern U.S., most activities can be done anywhere in the United States. Students learn how forests sequester carbon, strategies for reducing greenhouse gas emissions, and adapting to change. Includes many online tools, resources, and videos. Free download, with log-in account.


Carbon Station Cards for activity #7 "Carbon on the Move"

Use these Minnesota resources to modify lessons:

image: Focue on Forests coverFocus on Forests
This module is designed to foster student understanding of and appreciation for the forested lands throughout North America. The module’s activities provide an opportunity for hands-on study of forest resources while addressing concepts in biology, civics, ecology, economics, forest management, and other subject areas.

graphic: Municipal solid waste cover

Municipal Solid Waste
This module introduces waste management issues and options using hands-on experiences, strategies, and tools to make informed decisions and choices on waste management issues.


graphic:focus on risk coverFocus on Risk
This module helps students explore aspects of environmental and human health risks that affect their everyday lives. Hands-on activities allow students to learn about risk assessment, risk communication, risk perception, and risk management.

graphic: Places we live coverPlaces We Live
Focusing on place-based education, this module helps young citizens create a bond with their own community and explore community environmental decisions.

Places We Live correlations to Next Generation Science Standards

Optional: Use these aerial photos of three Minnesota places to accompany activity three.

Elk River








Minnesota River




graphic: Forests of the world coverForests of the World
Created with the World Forestry Center, this module helps students understand and appreciated the diversity of world forest environments, with an emphasis on human interaction with those environments.

image: Biodiversity coverBiodiversity
Three in-depth activities give students to examine broader concepts and larger connections—biological, political, cultural, ethical, and economic. Students learn how biodiversity affects decisions about growth, development, energy use, water quality, and health.

image: Biodiversity coverBiotechnology
Our Biotechnology Series is designed for high school and community college educators in the fields of Biology, Environmental Science, Social Studies, and Agriculture. A special effort has been made to construct activities that support instruction in AP Biology, AP Environmental Science, and AP Human Geography. This module was created as a supplement to the "Focus on Risk" curriculum.

Freebie: Teaching With iTree

Students learn to identify trees and measure tree diameter and height.  Then, using the free iTree tool (developed by the U.S. Forest Service), students estimate values of trees and their role in mitigating greenhouse gases, sequestering carbon, improving air quality, intercepting stormwater, and lowering a building's energy use.

Supplemental materials: