What are some original science projects for secondary school students?

[Fred404]

My name is Frédéric. I'm a science teacher always trying to find original projects for my students, even though it drives me crazy when I cannot do what expected.
I'm in Quebec in a secondary school and teach in secondaire 4 (grade 10)

 

[berkeman]

Welcome to PF, Frédéric. It's good to have you here.

Be sure to check out our Teachers/Teaching sub-forum. Lots of like-minded folks posting in there at all levels.