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 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.

This short video and interactive assessment activity is designed to teach fifth graders about finding the least common denominator.

This short video and interactive assessment activity is designed to teach fourth graders about finding the number from figure patterns.

This short video and interactive assessment activity is designed to teach fifth graders about finding the reciprocal of fractions.

This short video and interactive assessment activity is designed to teach fifth graders about finding the total amount of liquid in liters and milliliters.

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

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

This short video and interactive assessment activity is designed to teach fifth graders about finding the total using division - word problems.

This task asks students to solve addition and subtraction equations with different structures so that they are able to see the connections between addition and subtraction more easily.

This short video and interactive assessment activity is designed to teach fifth graders about determining rate.

This short video and interactive assessment activity is designed to teach fourth graders about determining rate.

This game will reinforce number before and after as well as reading and sequencing numbers.

The purpose of this task is to provide students with a concrete experience they can relate to fraction multiplication. Perhaps more importantly, the task also purposefully relates length and locations of points on a number line, a common trouble spot for students. This task is meant for instruction and would be a useful as part of an introductory unit on fraction multiplication.