From the GLOBE Carbon Cycle website:

The Globe Carbon Cycle project is one of four Earth System Science Projects (ESSPs) funded by NASA and NSF to develop hands-on, intermediate and secondary school-based science activities for the GLOBE (Global Learning and Observations to Benefit the Environment) Program.

GLOBE Carbon Cycle is focused on bringing the most cutting-edge research and research techniques in the field of terrestrial ecosystem carbon cycling into the classroom. It uses a systems-thinking approach to gain a foundation in the carbon cycle and its relation to climate and energy. The materials incorporate a diverse set of activities geared toward upper-middle and high school students, including:

• Introductory Learning Activities: Hands-on activities that use a systems thinking approach to understanding the global carbon cycle, while introducing important concepts such as pools, fluxes, and equilibrium.

• Plant-A-Plant Experiments: Hands-on cultivation experiments for the classroom, with options for structured, guided, or open levels of inquiry.

• Protocols and Field Learning Activities: Skills designed to help you collect and analyze data to determine the biomass and carbon storage in the vegetation near your school, including guides for uploading and interpreting data. Protocols can be done in Standard (homogeneous vegetation) or Non-standard (school yard, city park) sites.

• Modeling: Computer models (at varying levels of complexity) to help you predict the change in biomass and carbon storage over time, and give students the opportunity to use an important scientific tool.

• Teacher Support: Comprehensive eTraining modules; NGSS-correlated materials; ready-to-use assessment materials; and background information on carbon, systems, models, and inquiry teaching.