Broken eggs, toilet paper and inertia:
Guiding question: How can Newton’s first law predict the motion of objects?
Key Concept: Forces
Related Concepts: Inertia, mass, weight
Generalization: Objects in motion stay in motion while objects at rest stay at rest unless acted on by an outside force.
The 8th Grade MYP 3 class jumped right back into the swing of things last week as they began to explore Newton’s Laws, forces, work, energy, power, and eventually simple machines. As many of them had heard before, and you may also know, Newton’s first law states, “an object in motion stays in motion and an object at rest stays at rest unless acted upon by an outside force.” This is also known as Newton’s Law of Inertia. As the students learned, inertia is the laziness of an object.
To demonstrate Newton’s law of inertia students explored several demos that were set up in the new amazing physics lab. There was a 20 kg mass on the table that didn’t want to move (high inertia), the classic table setting with tablecloth demo, eggs miraculously falling into water glasses, the tennis ball head gear, and the how to properly tear off toilet paper demo.
The learning that occurred is something that will stay with the students forever, and the expressions of triumph and celebration after mastering one of the demos was extremely exciting. See the video for more!