Product   Description  List Price  
Isn't Math Illuminating Poster 
 CIRCLES AND ELLIPSES are everywhere, even on the logo of Grand Central Terminal in New York City. The mathematics contained in this poster ranges from circumferences of circles, to frustums of cones, to ellipses, all found in the trappings of Grand Central Station. Ain't math grand? (Solutions provided.)
 $12.95 

Time for Math Poster 
 TIME for MATH
24HOUR CIRCULAR CLOCKS are divided into 24 hours and display the time since midnight, which is when the day begins. What would our lives be like if there were fewer or more than 24 hours in a day? Students will enjoy playing with this and other ideas generated by analog clocks. (Solutions provided.)
 $12.95 

A Mathematical High Point  Poster 
 a MATHEMATICAL HIGH point
TAIPEI 101 has 101 floors above ground and five floors below. It was the first building in the world to be taller than half a kilometer and, from 2004 to 2010, it was the tallest building in the world. Taipei 101 set several records, including having the world’s fastest elevator.
Using the building statistics given on the poster, challenge your students to calculate how far they can see from the top; how long it would take for the elevator to go from the ground floor to the 89th floor; or find the angle of depression from a particular spot on the roof. (Solutions provided)
 $12.95 

Math Meets Art Poster 
 MATH meets ART
STARRY NIGHT At first glance, James Yamada’s Our Starry Night, is a black, 12foottall sculpture with 1900 unlit colored LED lights on its two flat surfaces. As one passes through the sculpture’s rectangular passageway, however, patterns of light appear triggered by a metal detector hidden inside the structure’s casing.
Have your students seeing stars as they explore combinatorics, ellipses, matrices, and parametric equations stemming from this investigation of a publicly displayed sculpture featuring geometric star shapes. (Solutions provided.)
 $12.95 

Patterns That Rock  Poster 

PATTERS that rock
TRIANGULAR NUMBERS arise as solutions to many problems. The basic pattern that makes up almost every rock song ever recorded can be summed by saying, “1 and 2 and 3 and 4.” Musicians often say, “a 1 plus a 2 plus a 3 plus a 4,” which shows how to calculate the sequence of triangular numbers 1, 3, 6, 10, 15, 21, 36, 45, 55, 66, ....
Investigate triangular numbers, in particular, triangular numbers that are also perfect squares. Featured problems include finding the intersection of these two sets of numbers. (Solutions provided.)
 $12.95 

A Slice of Math Poster 
 A SLICE of MATH
TRUNCATING A CYLINDER is a technique often used in design to add beauty to an object that might otherwise be nondescript.
What happens when a cylinder gets truncated? Featured problems explore the situations that can arise when a plane intersects a cylinder. (Solutions provided.)
 $12.95 

Fibonacci Stays Here Poster 
 Fibonacci stays here
THE GOLDEN RATIO is also referred to as the golden section, the golden mean, the golden proportion, the extreme and mean ratio, and the divine proportion. It has been used to ensure beauty and balance in art, architecture, music and design for centuries.
Here, the ubiquitous Fibonacci sequence shows up where it is least expected: in the logo of a Chicago hotel. Your students can discover how to construct and measure a golden rectangle, determine where the golden ratio appears in the pentagon formed by a 5pointed starfish, and apply graphs of polar equations. (Solutions provided.)
 $12.95 

I ♥ Parabola  Poster 
 PARABOLA Bridges are physical manifestations of a parabola. The heightversustime graph of falling objects at or near the center of the earth can be modeled by a parabola as well. It is usually the first nonlinear curve that students study in algebra. A parabola can be defined as the locus of points equidistant from a point (called the focus) and a line (called the directrix). The parabola with vertex at the origin and opening upward has the equation 4py = x2, where p is a constant representing the distance from the focus to the vertex (or the vertex to the directrix).
 $10.95 

I ♥ Logarithmic Spirals  Poster 
 LOGARITHMIC SPIRAL The logarithmic spiral is a polar curve whose equation is given by r = ae^{bθ}, where a and b are constants.
The nautilus shell is the bestknown example of the logarithmic spiral found in nature, but flying animals will approach targets by using a logarithmic spiral pattern. Raptors will hawk prey, swifts will attack insects, and insects will approach a light source via a logarithmic spiral. Beaches can form in the shape of a logarithmic spiral, and the arms of tropical storms can also model this shape. The logarithmic spiral has close connections to the golden ratio.
 $10.95 

I ♥ Fibonacci Numbers  Poster 
 FIBONACCI NUMBERS The Fibonacci sequence, 1, 1, 2, 3, 5, 8, 13, 21, 34, . . . , where the first two terms in the sequence are each 1 and every successive term is the sum of the two previous terms.
The ratio of successive terms approaches the golden ratio, ø = (1 + √5) / 2 ≈ 1.6803399. Fibonacci numbers occur often in nature, in particular in phyllotaxy, the study of leaf arrangement on a stem. The spirals on sunflower seed heads, on pineapples, and in pine cones are invariably Fibonacci numbers or multiples of Fibonacci numbers.
 $10.95 
