Using the LEGO® NXT robotics kit, students construct and program robots to illustrate and explore the Fibonacci sequence. Within teams, students are assigned roles: group leader, chassis builder, arm builder, chief programmer, and Fibonacci verifier. By designing a robot that moves based on the Fibonacci sequence of numbers, they can better visualize how quickly the numbers in the sequence grow. To program the robot to move according to these numbers, students break down the sequence into simple algebraic equations so that the computer can understand the Fibonacci sequence.

This task allows students to relate addition and subtraction problems to money in a context that introduces the concept of scarcity.

This short video and interactive assessment activity is designed to teach third graders about filling in the missing number to balance the equation.

This short video and interactive assessment activity is designed to teach third graders about filling in the missing + or - sign.

This simple-looking problem reveals much about how well students understand unit fractions as well as representing fractions on a number line.

This short video and interactive assessment activity is designed to teach fourth graders about adding and subtracting - missing operation.

The purpose of this task is to have students work on a sequence of area problems that shows the advantage of increasingly abstract strategies in preparation for developing general area formulas for parallelograms and triangles.

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 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.