Number and Quantity

Square Roots Game - Play this exciting square roots game to sharpen your skills about adding, subtracting, multiplying, dividing, simplifying, estimating, and graphing expressions with radicals.

Number System Muncher - Test your knowledge of number systems by completing the following 5-level game, Natural Numbers, Whole Numbers, Integers, Rational Numbers and Irrational Numbers.

Vector Quantities - Videos and lessons to help High School students recognize vector quantities as having both magnitude and direction.

Vector Investigation: Boat to Island - Move the boat around the water by changing the magnitude and direction of the boat's speed (blue vector) or the magnitude and direction of the water current (red vector). Try to land the boat on the island — but be careful not to hit the walls!

Complex Number Systems - Learn more about complex number systems.