Lesson objective: Apply the formulas for circumference and area of a circle to creatively solve a problem.

This lesson provides an opportunity for students to apply their knowledge and understanding of the area and circumference of a circle to a real-life situation. Students are asked to create and justify an equivalent amount of pancakes that a recipe will produce. Students wil choose the dimensions for their pancakes and find the total amount that is equivalent to the given amount.

Key Concept students will use:

- Circles have an area, just like any other two dimensional shape.

Skills students will use:

- Calulating the circumference of a circle when given the area.
- Calculating the area of a circle when given the diameter.
- Calculating the radius and area of circles.

Students engage in Mathematical Practice #2 (Reason abstractly and computationally) as they choose a size (diameter) for their pancakes and calculate how many pancakes they could make from a given recipe.

**Key vocabulary: **

- area
- circle
- circumference
- diameter
- pi (π)
- radius

**Special materials needed:**