Ecoventure 2010 -- walk the green talk

We intend to teach the Vietnamese
students how to make this simple musical instrument using
bottle caps.

which will be divided into 2 classes.

(Let's assume that these 2 classes will be conducted simultaneously.)

We will require the
following items to make the instrument:
- 12 bottle caps of the same size
- 2 bigger bottle caps (same size)
- some beans / sand
- superglue
As such, we will need 1,120 bottle caps in total (960 smaller
bottle caps & 160 bigger bottle caps) if the students were to have
1 set of items each. If we are unable to collect that amount of items, our next
alternative would be to divide the students into groups.