- Plane Geometry
Original Handbook Problem: Paige cuts a square out of a circular pizza. The corner of the square lies on the circumference of the pizza. To the nearest whole number, what percent of the pizza is left...
- Plane Geometry
Animation Type: White Board. Original Handbook Problem: The circle shown has a diameter of 12 inches, m<ABC = 30 degrees and AB = BC. What is the length of minor arc AC? Express your answer in terms...
- Logic
Animation Type: Stop Motion. Original Handbook Problem: A boat can hold three people, one of whom needs to row to cross a river that is 20 yards wide. What is the minimum distance the boat must travel...
- Algebraic Expressions and Equations
Original Handbook Problem: In Lewis Carroll’s Through the Looking-Glass, this conversation takes place between Tweedledee and Tweedledum. Tweedledum says, “The sum of your weight and twice mine is 361...
- Sequences, Series and Patterns
Animation Type: Computer Illustrated, Static Images. Original Handbook Problem: The number of E. coli bacteria in a rich medium is increasing at a rate of 50% every 3 hours. How many hours does it...
- Coordinate Geometry
Original Handbook Problem: Given the points A(–2, 1) and B(3,4), what are the coordinates of point C in the fourth quadrant such that m<CAB = 90 degrees and AB = AC? Express your answer as an ordered...
- Problem Solving (Misc.)
Animation Type: Stop Motion. Original Handbook Problem: Bob and Sam each are going to drive from Lincoln to Denver, a driving distance of 488.5 miles. Bob leaves at 6:00 a.m., traveling at an average...
- Percents and Fractions
Animation Type: Stop Motion. Original Handbook Problem: It is the policy of Sky Airlines to cancel any flight that has fewer than 80% of its seats filled. A Sky Airlines plane has 24 rows with 6 seats...