At Schuyler Central High School our school parking lot is gravel and very ineffective to get in and out. Design a new parking lot and come up with how much it is going to cost to build?
Give students a problem and get out of their way.
Give students a simple problem where they have to make something. Get students building, when students are literally all hands-on deck, they work together and make incredible things.
August 21, 2017 there is going to be a total solar eclipse over our school. Since you can't look directly at the sun, develop a cheap alternative to look safely at the sun.