It's not often that students are allowed to make paper airplanes in class, it's generally frowned upon by teachers. But this class is the exception. Ottawa students are part of a larger effort to get into the Guinness world record book for the largest science class.

The students are making different paper airplanes for different planets including Mars, Earth and the Moon. They are throwing the planes to learn about gravity.

The world record attempt has participants from across the country. It's part of National Science and Technology Week.

Canada set the record last year with 13 701 participants. It will be a couple of months before they learn if they've set a new record.