Circumference of a Circle & the Meaning of Pi

This Sticky Math Lesson examines the circumference of a circle conceptually by exploring the meaning of pi. This lesson can introduce vocabulary through the drawings, offers an opportunity for students to use precise vocabulary (MP6), and acts as a formative assessment of academic vocabulary.  7.G.B.4

Area of a Circle Related to the Area of a Rectangle / Parallelogram

This Sticky Math Lesson examines the area of a circle conceptually by connecting to the area of rectangle / parallelogram. It is helpful to examine the relationship between the area of a rectangle and any parallelogram before this lesson. Incidentally, this lesson is a good example of stopping to contextualize (MP2) in each of the permutations of the area equation.  The lesson can introduce vocabulary through the drawings, offers an opportunity for students to use precise vocabulary (MP6), and acts as a formative assessment of academic vocabulary.