Making a paper Helicopter-Science

AIM
Make a helicopter that will stay in the air for a long time.

METHOD
Cut out and assemble four helicopters shown on the opposite page. Attach the paper clip to one of helicopters.

One members of your group holds the helicopter at a height of 2 metres.

On the count of three, the person helicopter drops it, while another member of your group times how long it takes for the helicopter to hit the floor.

Record your results in the table below.

Repeat each drop three times.

Repeat steps 2-5 using the helicopter models.