The scenario is aimed at 7th grade students, at their second year in studying Physics. They will need background knowledge about forces, especially gravity, and movement( translation and rotation). They will also use previous learned methods to record experimental data and graphical representation of physical quantities or experimentally determined variations.
The 5 hours scenario is divided according to a sequence of steps that correspond to scientific investigation, to answer the problem to be investigated: ' The hardest thing to keep is the balance ...'.
Educational Object Link