Directions: What is the longest chord in a circle that has an area of 25π square units? Source: Nanette Johnson

Directions: If n is equal to the number of sides, when is the sum of the interior angles less than (or greater than or equal to) the sum of the exterior angles? Source: Ricardo Navarro, Gladys Velasquez, Bryan Aguilar, and Eddie Galaviz

Directions: If n is equal to the number of sides on a regular polygon, what is the lowest value of n where each interior angle’s measure is less (or greater) than the exterior angle? Source: Ricardo Navarro, Gladys Velasquez, Bryan Aguilar, and Eddie Galaviz

Directions: How can you tell what kind of regular polygon has the same measure for its interior and exterior angles? Source: Ricardo Navarro, Gladys Velasquez, Bryan Aguilar, and Eddie Galaviz

Directions: How can we figure out how many dots there are below? Source: Dan Meyer.  Additional examples can be found here using a resource provided by Melissa Canham.

Directions: Write three equations whose solution is x = 3. Source: Dan Meyer

Directions: Draw three rectangles with a perimeter of 20 units. Source: Dan Meyer

Directions: Create a table of values that is not a function. Source: Nanette Johnson and Robert Kaplinsky

Directions: Create a table of values that is a function. Source: Nanette Johnson and Robert Kaplinsky

Directions: Make the largest (or smallest) expression by using the digits 0-9, no more than one time each, in the boxes below.  Note: for 5th grade, remove the exponent to make it grade level appropriate. Source: Robert Kaplinsky with answer from Michael Fenton and his students.