Roto-Copter Number Two!

We decided that our Roto-Copters needed to be stronger
because the first one ripped easily. We also decided that
we would like to see if a smaller copter worked better
than the bigger one. 
So, we used a stronger card which lasted a lot longer longer 
than the first ones. No one ended up with a ripped one
which was great.
We also made a smaller copter which started spinning in
the air quicker than the bigger ones. When we threw a big 
one and a little one up into the air at the same time, the big 
ones were heavier so they dropped quicker than the little
ones before they started spinning.
Here we are testing them out.

Our Second Roto-Copter on PhotoPeach