Through making straw rockets, we learned that the less air escaping, the more air pressure there was that would allow our 'rockets' to fly. Some also found that shorter straws meant less space for the air to take to get to the paper and thought it made their rockets more powerful. Some also found out that if they were too heavy from sellotape, they wouldn't fly as well.
We wonder how REAL rockets fly...We will find out as the term goes on!
(Sorry for low quality - still working out sharing systems between phone, google drive, youtube and blogger!)
