Texas Instruments
Texas Instruments: Do You See What I See?
Students discover how pictures formed by graphing ordered pairs can be stretched and shrunk by multiplying and dividing the coordinates.
Curated OER
Parametric Unit Circle
This site provides definitions for different parts of a circle, pictures to more clearly represent formulas involving circles. Some of the formulas discussed include: area of a circle, area of a sector of a cirles, circumference, length...