By studying key processes in the carbon cycle, such as photosynthesis, composting and anaerobic digestion, students learn how nature and engineers "biorecycle" carbon. Students are exposed to examples of how microbes play many roles in various systems to recycle organic materials and also learn how the carbon cycle can be used to make or release energy.

Students bury various pieces of trash in a plotted area of land outside. After two to three months, they uncover the trash to investigate what types of materials biodegrade in soil.

In a multi-week experiment, students monitor the core temperatures of two compost piles, one control and one tended, to see how air and water affect microbial activity. They daily aerate and wet the "treated" pile and collect 4-6 weeks' worth of daily temperature readings. Once the experiment is concluded, students plot and analyze their data to compare the behavior of the two piles. They find that the treated pile becomes hotter, an indication that more microbes are active and releasing heat. Through this activity, students see that microbes play a role in composting and how composting can be used as a carbon management process.

Students explore the concept of biodegradability by building and observing model landfills to test the decomposition of samples of everyday garbage items. They collect and record experiment observations over five days, seeing for themselves what happens to trash when it is thrown "away" in a landfill environment. This shows them the difference between biodegradable and non-biodegradable and serves to introduce them to the idea of composting. Students also learn about the role of engineering in solid waste management.

In this lesson, students will be introduced to the idea of decomposition. Specifically the lesson caters to math word problems, but could be easily modified to any subject (as found in the modificaitons section of the lesson plan). Students will engage with each other and the vocab to work through an easy process to decompose word problems into manaeagable pieces as a strategy to solve. All activities are low prep and can be modified to your needs. This can be a stand alone lesson or expanded by using Part 2 and Part 3 to deepen understanding through coding activities. 

This lesson expands upon the ideas of decomposition by using GameChangineer to incorporate commands to create a coded mini game from decomposing word problems. Students will assist the teacher in this guided lesson on how to create commands and use the website before engaing independently in Part 3. Activities are low prep with modifications included, but do require organized planning to implement effectively. If you have not done a lesson on decomposition, it is suggested you use Part 1 to help student's gain the necessary understandings of the processes used in this lesson. 

This is the final part of an extended lesson on decomposition. Students will create a word problem to decompose and then use GameChangineer to create a mini game that is reflective of the word problem and its solution. Students will be using the plan, design, and review process thourhgout their creations. A rubric and self reflection tool for the final products are included. Activities are low prep with modifications included, but do require organized planning to implement effectively. If you have not done a lesson on decomposition, it is suggested you use Part 1 to help student's gain the necessary understandings of the processes used in this lesson. If you have not done a lesson on writing commands and using GameChangineer, it is suggested you use Part 2 before implementing this independent activity. 

In this lesson, students explore solid waste and its effects on the environment. They will collect classroom trash for analysis and build model landfills in order to understand the process and impact of solid waste management. Students will understand the role of engineers in solid waste management.

Students investigate what types of materials biodegrade in the soil, and learn what happens to their trash after they throw it away. The concepts of landfills and compost piles will be explained, and the students will have an opportunity to create their own miniature landfill in which the difference between organic and inorganic waste will become clear.