Register with GEF for FREE to enjoy these great benefits! 

    • member only contests and raffles

    • sustainability program news and updates

    • significant discounts at GEF Institute

Note: If you have problems registering, contact This email address is being protected from spambots. You need JavaScript enabled to view it.

JOIN GEF NOW!

Taking a GEF Institute Course? Login by clicking here.

 

 

 

 

 

Join Us

Sign Up for GEF's National Green Week 2015!
Please note: Your privacy is very important to GEF. We do not share or sell any of your data.  It is with the sole purpose of providing you with relevant information that GEF will contact you.
Login/SignUp

Welcome to the Sustainability Lesson Clearinghouse

Here, you can find free sustainability lessons to use in your class and upload your own lessons to share. Be sure to rate the lessons you use and leave comments for your colleagues!

All of GEF's lessons and programs are offered at no cost.  Become a member to support GEF and enjoy member only benefits! 
Join button_03

Professional Development

GEFinstitute LOGO_WEB GEF Institute offers affordable, online sustainability courses eligible for professional development or academic credit.
Give your resume a boost!

Sponsor a Teacher

Support educators in your community by helping them earn a Certificate in Sustainability or take an online course. Find out more about sponsorship!
Sustainability Lesson Clearinghouse

Composting "The Right Mix"

Lesson Description:
Students will be able to...
  • Identify soil as consisting of weathered rock and decomposed organic material.
  • Explain the benefits of composting to improve soil quality and describe the balance required between brown/carbon-producing materials and green/nitrogen-producing materials.
  • Use the concept of ratio to represent quantitative relationships.

Lesson Type:
  • Project

Sustainability Topic:
  • Gardening

GEF Program Category:
  • Green Thumb Challenge

Time Needed:
30 minutes
Standards Addressed:
Science Standard 2: Understand Earth’s composition and structure.
  • Benchmark # 3: Know components of soil and other factors that influence soil texture, fertility, and resistance to erosion.

Science Standard 5: Understand the structure and function of cells and organisms.
  • Benchmark # 9: Know that cells use inorganic compounds (e.g., minerals, water) to make materials that the cells or organism needs.

Science Standard 6: Understand relationships among organisms and their physical environment.
  • Benchmark # 5: Know how matter is recycled within ecosystems (e.g., matter is transferred from one organism to another repeatedly, and between organisms and their physical environment; the total amount of matter remains the same, even though its form and location change).

Mathematics Standard 2: Understand and apply basic and advanced properties of the concepts of numbers.
  • Benchmark # 1: Understand the relationship between equivalent number representations (e.g., ratios) and the advantages and disadvantages of this type of representation.
  • Benchmark # 9: Understand the concepts of ratio, proportion and percent and the relationships among them.

Mathematics Standard 3: Uses basic and advanced procedures while performing the processes of computation.
  • Benchmark # 6: Use proportional reasoning to solve mathematical and real-world problems (e.g., involving ratios and proportions).

Materials Needed:
  • six lemons
  • six cups of cold water
  • 1 cup of white sugar
  • measuring cup
  • lemonade pitcher
  • spoon
  • small paper cups 
  • worksheet provided 

School or Group:
Green Education Foundation (GEF)
Contact Email:
service@greeneducationfoundation.org
Lesson Documents:
application/pdf Composting_Worksheet.pdf
Located in: Math | Science

The Sustainability Lesson Clearinghouse is brought to you in partnership with

Center for Green Schools