standard_description: Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.
problem_activity: Stage 6: Shapes on the Coordinate Grid
Required Preparation
Materials to Copy
Blackline Masters
Can You Draw It Stage 6 Recording Sheet
Explore the Coordinate Grid Cards

Narrative
Partner A picks a card and describes it to their partner. Partner B earns two points if their rectangle matches the one Partner A described exactly and one point if it doesn’t match exactly, but matches the clue given.


aligns: no