Read Weeds in Rylan's Yard. Use the same process to investigate an unknown plant in your yard, a local park or your schoolyard. Be sure to answer these questions in the report of your investigation. (Caution: Do not touch an unknown plant with your bare hands.
Ill-Defined Encounters Are the Right Kind! (guiding problem-based learning in science classrooms) The best way for students to learn science is to experience problems that challenge science, and the thought, habits of mind and actions associated with trying to solve them. This implies opportunities for authentic, inquiry-based learning.
The banner headline of your town's paper seems impossible. Local soil testing has discovered a serious problem. The soil of your community is heavily contaminated with a toxic chemical. The only answer is that everyone must move. The government says they will pay to move everyone just once.