AIM ; to make a rainwater measurement tool / rain gauge

REQUIREMENT: bottle , cutter , tape

PROCEDURE : 1) first get the bottle of flat bottom

2) cut the bottle in half and cut its neck region

3) up turn the neck of the bottle and secure it in the bottle

4) secure it with cello tape

6) by using the formula

rainwater /funnel area * 10 = rainwater in mm

1Cm^3 = 1ml