Personal development (parachute)

On monday, we hav our PD class...
but this time was a special class and experience as we are going to launch parachute that we designed and made before that.
before the day comes, Kang Shen, Alvin n me hav discussion on how to make parachute that can break the teacher's record so far...
we made many...
but fail...
but on last friday, v discover something that can make the parachute lighter and can last longer in the air...
after that, v bring every parachute that v made to school to be launched and the longest time will be taken into consideration. For the first launch, our group get 12seconds...but it haven break the teacher's previous record which is 14 seconds....then v try again using the same parachute...still the same....(haiz~)...v launch another parachute that v made.. the time is also the same...then v try once more the previous 1...this time, the wind blows...the parachute opened beautifully...wuahaha...then i flies....1 second, 2seconds, 3seconds~~till 15 seconds it also haven't dropped!!v r so happy!!! Our time finally broke the teacher's record! is 53 seconds....
really unbelievable...haha...
at the same time, got 1 group din prepare well...they just used the umbrella and tie the tennis ball on it...haha..guess their group's time...is...............2.9 seconds...then they modify it and launch another time...this time..they time improved...got 3.2 seconds...haha...
the teacher say she is very satisfied with our effort as we did not give up during the launching or parachutes...trying to modify our parachute on the spot to break each other's record...n promise to give good grades for our PD....so HAPPY!! launching parachute is so fun...
if got chance i will do it again...