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Make the Biggest Circle

Directions: Using the digits 1 to 9 as many times as you want, fill in the boxes to make the biggest circle: Source: Robert Kaplinsky

Which Circle Is Bigger? (High School)

Directions: Which circle is bigger?  Circle A with an area of 25 square units or Circle B with the equation x^2 + y^2 = 25 Source: Robert Kaplinsky

Which Quadrilateral Has A Greater Area?

Directions: Which quadrilateral has a greater area? Quadrilateral A has its perimeter equal to 44 units.  Quadrilateral B has the sum of its interior angles equal to 360 degrees. Source: Robert Kaplinsky

Which Rectangle is More Like a Square?

Directions: Which rectangle is more like a square?  Rectangle A is 13 units by 15 units.  Rectangle B is 2 units by 3 units. Source: Robert Kaplinsky

Squares: Perimeter v. Area

Directions: How can you tell which square is bigger: a square with a perimeter of 25 units or a square with an area of 25 square units? Source: Robert Kaplinsky

Rectangles: Perimeter v. Area

Directions: How can you tell which rectangle is bigger: a rectangle with a perimeter of 24 units or a rectangle with an area of 24 square units? Source: Robert Kaplinsky

What Measurements Make a Circle?

Directions: What is one possible set of values for the area and circumference of the same circle? Source: Nathan Charlton

Identify a Fraction on a Number Line

Directions: Label the point where 3/4 belongs on the number line. Be as precise as possible. Source: Inspired by Illustrative Mathematics