Geometry: Calculating the Area of a Circle
In this area activity, students use the perimeter or radius to determine the area of a circle. This one-page activity contains 8 problems. This activity may be produced in printed form. Answers may be viewed on-line.
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Areas of Geometric Shapes with the Same Perimeter
A triangle, square, hexagon, and circle all have a perimeter of one unit. Eighth graders must attempt to find the area of each and arrange them in order from least to greatest areas. A terrific task for applying four different area...
7th - 9th Math CCSS: Designed
Solving Area Problems Using Scale Drawings
Calculate the areas of scale drawings until a more efficient method emerges. Pupils find the relationship between the scale factor of a scale drawing and the scale of the areas. They determine the scale of the areas is the square of the...
7th Math CCSS: Designed
Investigating Area Under a Curve
Taking a lesson straight from the calculus classroom and making it algebra appropriate is the task of the day. Learners go step by step through calculating different area approximations underlines and curves, reviewing many key geometry...
9th - 11th Math CCSS: Designed
Area and Circumference of Circles
Don't go around and around, help your class determine amounts around and in a circle with a video that connects circumference to the perimeter or the distance around an object. The resource includes 14 questions dealing with circles and...
9 mins 8th - 10th Math CCSS: Adaptable