- teach enough IT at the right time, a teenager MUST know enough to produce nicely formatted docs with graphs, tables etc, LaTeX level, at least with some pre-made templates, how to take notes, do simple computations etc on a desktop, it's the writing ability of today, people MUST know enough or they will suffer for the entire life struggling with bad tech and allowing bad tech to spread;
- teach like universities from the start, I do no know how does primary schools works in the USA, here in EU they teach with regular assignments and continuous checks instead of pushing children to take notes ALONE, study in their own notes and form their own knowledge valuating more their memory and conformism than the knowledge they really have acquired;
- teach without frills, I do not need slides and co, I need lectio magistralis who INTEREST people and makes them feel the passion in any subject, than test the acquired knowledge making your students teach a lesson on what they have learnt, that's the way to prove themselves what they have understood instead of blindly remembered;
- be clear, giving real life examples you audience should have lived sometimes.