Students explore the concept of the mean as they examine and compare scores for various sports events.

This task asks students to find and use two different common denominators to add the given fractions. The purpose of this question is to help students realize that they can use any common denominator to find a solution, not just the least common denominator.

This task asks students to use two different denominators to subtract fractions. The purpose of this is to help students realize that any common denominator will work, not just the least common denominator.

This short video and interactive assessment activity is designed to teach third graders about finding least common multiples (lcm).

In this task students have the opportunity to construct linear and exponential functions, including arithmetic and geometric sequences, given a graph, a description of a relationship, or two input-output pairs (include reading these from a table).

This short video and interactive assessment activity is designed to teach fourth graders about finding time using multiple steps - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about finding time using multiple steps - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about finding the total distance between two objects.

This short video and interactive assessment activity is designed to teach fourth graders about finding the total distance between two objects.

This real world problem is appropriate for mental mathematics and students should be encouraged to think through the solution mentally.

The purpose of this task is to give 4th grade students a problem involving an unknown quantity that has a clear visual representation. Students must understand that the four interior angles of a rectangle are all right angles and that right angles have a measure of 90_ and that angle measure is additive.

This short video and interactive assessment activity is designed to teach fourth graders about finding the adjusted rate - word problems.

This short video and interactive assessment activity is designed to teach second graders about finding the amount of water with illustrations and calculations.

This tasks examines how to calculate the area of an equilateral triangle using high school geometry.

This short video and interactive assessment activity is designed to teach second graders about finding the capacity of water with illustrations (metric units).

This short video and interactive assessment activity is designed to teach fourth graders about finding the capacity of water with illustrations (metric units).

This short video and interactive assessment activity is designed to teach third graders about finding the expression not matching a given number.

This short video and interactive assessment activity is designed to teach fourth graders about finding the expression not matching a given number.

This short video and interactive assessment activity is designed to teach fourth graders about finding the incorrect equations.