the preparation...

today, the entire sec2 actually had this PET rocket programme. overall, it was quite fun (: we made our own rocket from the scratch (: it wasn't easy for us too. hahas. this is my 2nd time doing rockets. :D follow by, parachute. throughout this whole procedure, we also can get to learn what is potential energy, etc. hmm, the whole morning and afternoon we have been doing this! (:

what are friends for? who knows?

it takes thousand of bolts to assemble an auntomobile,

and one nut to scatter it all over the road. (: