Ratio Rate9-12 · Conjecture and justification challenge
Ready

This is a simulation, not a quiz. You answer by trying things and watching what happens.

Our question

What representation and justification make a Grade 9 claim about ratios, rates, and proportional reasoning valid within its stated domain?

Getting the simulation ready…

  1. 1Build or change something
  2. 2Say what will happen, then run it
  3. 3Finish: say what you found
What counts as evidence
  • Reconcile the Grade 9 representations, explain the invariant relationship, and decide whether the boundary case supports or limits the conjecture.
  • State the domain, assumption, or counterexample that prevents overgeneralizing the claim about ratios, rates, and proportional reasoning.
  • linked representations
  • valid computation