Get our free book (in Spanish or English) on rainwater now - To Catch the Rain.
→Problem statement and criteria
| The cost of the project was geared towards being very minimal to fit the budget of kids. Most of the material to be used can be acquired at no cost to the child.
| The amount of time related to upkeep of the worm bin will be minimal and sustainable for an estimated time of six to twelve months.
Within two months the worm bin will be able to produce castings provided that the worm bin is properly cared for and is given an adequate amount of food waste.
| Build Time
Build time should be minimal, i.e. able to be completed over the course of one weekend by the targeted age group.
| Educational Value
| The worm bin design will enable
the targeted age group to both learn about the general design of a worm bin and to help them understand the concepts of waste and consumption.
5| The materials used in the design of the worm bin will not be harmful to the targeted age group’s health or well being.
design of the worm bin will be easily reproducible by the targeted age group, given adequate parental help and supervision.