🎢 Mystery Marble & Magnet Demo

Students observe three short demonstrations: (1) a marble that does not move when pushed equally from both sides (balanced forces), (2) a marble that suddenly speeds up down a ramp (unbalanced force), and (3) a paperclip that moves without being touched by a hidden magnet. Students record detailed observations in their Investigation Notebook (what they see, hear, and measure with simple rulers). The class generates a shared "Notice/Wonder" chart focused on pushes, pulls, motion, and non-contact forces.