Graduation rate from primary school for most countries for males. Taken by dividing the number of students satisfactorily completing the final year of primary school in a given year by the number of children in the age cohort of graduation age. Worldwide the rate is 90.4% and increasing.

This resource consists of a Java applet and Expository text. The applet simulates the probability plot that compares the empirical quantiles of a sample from a sampling distribution to the distribution quantiles of a test distribution. The sampling distribution, test distribution, and sample size can be specified.

This resource consists of a Java applet and descriptive text. The applet illustrates the problem of points: a coin is tossed until either n heads occurs or m tails occurs. The parameters n, m, and the probability of heads can be varied.

Delve into a microscopic world working with models that show how electron waves can tunnel through certain types of barriers. Learn about the novel devices and apparatuses that have been invented using this concept. Discover how tunneling makes it possible for computers to run faster and for scientists to look more deeply into the microscopic world.

How does energy flow in and out of our atmosphere? Explore how solar and infrared radiation enters and exits the atmosphere with an interactive model. Control the amounts of carbon dioxide and clouds present in the model and learn how these factors can influence global temperature. Record results using snapshots of the model in the virtual lab notebook where you can annotate your observations.

This resource consists of a Java applet and descriptive text. The applet illustrates a random walk on a discrete time interval from 0 to n. The time n and the probability of a step to the right can be varied. The random variables of interest are the final position, the maximum position, and the time of the last zero.

This resource consists of a Java applet and expository text. The applet allows the student to play the game of red and black, by betting on a sequence of Bernoulli trials until either a target is reached or the player is ruined. The target, initial fortune, and trial win probability can be varied.

This resource consists of a Java applet and expository text. The applet is a simulation of the standard casino roulette game. The random variables of interest are the winning under various bets.

The resource consists of a Java applet and expository text. The applet illustrates the distribution of the sample mean of a random sample from a given distribution. The sample size and the sampling distribution can be specified. The applet illustrates the central limit theorem.

Use a virtual scanning tunneling microscope (STM) to observe electron behavior in an atomic-scale world. Walk through the principles of this technology step-by-step. First learn how the STM works. Then try it yourself! Use a virtual STM to manipulate individual atoms by scanning for, picking up, and moving electrons. Finally, explore the advantages and disadvantages of the two modes of an STM: the constant-height mode and the constant-current mode.

Explore your own straight-line motion using a motion sensor to generate distance versus time graphs of your own motion. Learn how changes in speed and direction affect the graph, and gain an understanding of how motion can be represented on a graph.

Semiconductors are the materials that make modern electronics work. Learn about the basic properties of intrinsic and extrinsic or 'doped' semiconductors with several visualizations. Turn a silicon crystal into an insulator or a conductor, create a depletion region between semiconductors, and explore probability waves of an electron in this interactive activity.

What happens when an excited atom emits a photon? What can we deduce about that atom based on the photons it can emit? A series of interactive models allows you to examine how the energy levels the electrons of an atom occupy affect the types of photons that can be emitted. Use a digital spectrometer to record which wavelengths certain atoms will emit, and then use this knowledge to compare and identify types of atoms. Students will be abe to:

The goal of this exercise is to learn how state legislators do their job and the constraints they face in doing their job effectively while focusing on reelection. Frequency tables and crosstabulations are used.

Transistors are the building blocks of modern electronic devices. Your cell phones, iPods, and computers all depend on them to operate. Thanks to today's microfabrication technology, transistors can be made very tiny and be massively produced. You are probably using billions of them while working with this activity now--as of 2006, a dual-core Intel microprocessor contains 1.7 billion transistors. The field effect transistor is the most common type of transistor. So we will focus on it in this activity.

This resource consists of a Java applet and expository text. The applet illustrates the triangle experiment: A stick is broken randomly into three parts. The events of interest are that the pieces form an acute triangle, an obtuse triangle, or no triangle.

This resource consists of a Java applet and expository text. The applet illustrates the arrivals in a Poisson process where each arrival, independently, is one of two types. The time interval, the rate of the process, and the probability that an arrival is type 1 can be varied. The applet illustrates "splitting" a Poisson process.

This resource consists of a Java applet and expository text. The applet simulates a random sample from the uniform distribution on the interval [0,a], and computes standard point estimates of a. The bias and mean square error are also computed.

This resource consists of a Java applet and expository text. The applet is a simulation of the voter experiment, an interacting partile system that consists of a rectangular array of sites. At each discrete time unit, a site is chosen at random, a neighboring site is chosen, and the color of the first site is changed to that of the neighbor. The applet illustrates clustering of the colors and convergence to consensus.

The WPSA Annual Meeting will be hed on March 28 - 30, 2013, at the Loew's Hotel, Hollywood, CA. The theme for the event is: "The Empire Strkes Back!." Democratic governance, and its triumph over fascism and state-socialism, have long been facilitated by the ability of capitalism to “reform itself” or, more precisely, to reconcile itself to the modest regulation imposed by popular rule. Regulations and reforms established more than a century ago in the Teddy Roosevelt administration, and expanded from time to time in the 40 years that followed, constrained the exploitation of workers, prevented banks from gambling with the economic system, broke up monopolies, restricted unfair labor practices, and established a social safety net, and in so doing provided fertile ground for an unprecedented rate of economic growth, improvement in human conditions, and the establishment of a large and productive middle class. The stability that followed—and the spread or co-occurrence of this approach (with variation and modifications) in the other industrialized democracies of the world—forestalled the emergence of fascism in the U.S. and simultaneously pushed back against the spread of state-socialism in Europe and beyond.Since the passage of the Taft Hartley Act in 1947, the US has seen steady erosion in those protections. Workers in the US and Europe bear a greater and greater burden for the social goods provided by their society and receive fewer and fewer benefits while those who have benefitted most from the triumph of capitalism have begun to knock down the reforms achieved in the 20th Century. Hopes of spreading the improved human condition to the global south have foundered on a reconstructed mercantilist and neo-colonial international trade regime that has resulted in exploitation of workers in lesser-developed nations and vast environmental degradation.Is democracy up to this challenge? Can the free-market global economy again be brought into line with the goals of improving the conditions of humanity? Are our institutions, nation-states, international compacts, and ways of thinking up to this challenge, or will the latter part of the 21st Century more closely resemble the late 19th than the late 20th? While the WPSA welcomes proposals on all political and governmental questions of interest to the discipline, in 2013, we would like to pay particular attention to domestic and international inequality, its causes and its consequences, and whether democratic institutions are up to the task of addressing either.