The best hook to grab the attention of 10 to 14-year-olds would be:
"Math class. The dinner table. Your little brother’s T-ball game. What if I told you that you could make all of these places much more exciting with a simple piece of paper?"
This hook is engaging because it connects the activity of making paper airplanes to everyday situations that the audience can relate to, sparking their curiosity about how something as simple as paper can create excitement.