What do the terms Biodegradable and Decomposition mean, and how do they happen? These are just two of the questions explored in this activity, and are both very important concepts in the study of life cycles. Students investigate the effect of various factors on decomposition and biodegradability. They use an "inquiry method" to set up a series of experiments which focus on determining the rate of decomposition, the effect of soil type on decomposition, and the different types of substances which decompose. This relevant Lab-Aid is complete for 50 students.
Scientific Concepts:
Understand biodegradability
Explore decomposition and rates
Study effects of types of soil on decomposition
Explore the types of substances which can be decomposed
Use the "inquiry method" to set up experiments
Content List:
1Teacher's Guide with MSDS
50Student Worksheets and Guides
24Cover dishes, clear
24Flower pots, plastic
2Trays, plastic
1Package of dried plant material
1Package of gravel
1Package of processed foodstuff
1Package of animal material
1Package of clean sharp sand
1Package of natural fibers
1Package of plastic fragments
1Package of soil rich organic matter
1Package of synthetic fibers
Classroom Planning:
Number of students: 50
To complete this kit requires at least part of one ~50-minute class period to set up and then multiple opportunities during class time for observing and note taking for up to 2 months.