math videos

If you work and pay taxes, carry insurance on your home or car, belong to an HMO, or are putting money away for your retirement, you depend on the work of actuaries. Actuaries make up a rare breed of problem solver for the business world -- so unique there are only 19 thousand of them at work in North America. But they are in demand in the insurance and financial securities industries because of their ability to put a price tag on probabilities view more

Everyday we’re surrounded by signs and written information. Now imagine not being able to read. For too many Americans, that nightmare is a reality. That’s why Adult Literacy teachers are so important. They help people who never learned to read…to read. They also teach English as a second language courses. Another group in need are those who never graduated from high school. Without a high school diploma, many job opportunities are out of reach for them view more

Space may be the final frontier, but it’s been studied since the dawn of civilization. And while early man could only stargaze with unaided eyes, astronomers today use extremely sophisticated equipment to examine the universe. From giant telescopes here on the earth…to unmanned probes traveling millions of miles into deep space…information is collected and interpreted. Often with the use of computers view more

Just as city police officers protect people…fish and game wardens protect wildlife. In some states, they’re called Conservation Officers. They enforce laws and regulations designed to conserve fish and animal populations. They patrol their assigned areas by car, boat, airplane, horse or on foot. As officers of the law, Fish and Game Wardens, or Conservation Officers, carry weapons and are trained by the local, state or federal agency that employs them view more

When a crisis occurs, whether an act of war or terrorism, a technological emergency such as a nuclear power plant accident or hazardous waste spill, or a natural disaster, someone has to coordinate the response. Emergency Management Specialists work for law enforcement agencies, the military, local, state or the federal government and for private industry, to imagine the worst—and plan for it. When times are good, these specialists prepare emergency plans, provide training, develop warning systems, and run drills view more

There is a price any society pays for progress. Often, that price is measured in damage to our environment or the public health. Environmental Scientists and Specialists, including health specialists, try to stop the damage. These specialists investigate what’s causing the pollution or health hazard. They may perform laboratory and field tests to monitor environmental resources and determine the contaminants and sources of pollution view more

Finding the most effective way to produce a product or service is the job of an Industrial Engineer. They are the bridge between management goals and operational performance. They solve problems by combining production resources: people, machines, materials, information and energy. They use mathematical techniques, expert computer systems, cost analysis, financial planning, quality control and complex distribution plans to improve profits view more

Every business needs to know who their customers are…and what they want. Market Research Analysts provide that information. When a new product is being developed, they consider its potential sales—and the competition. They may design telephone, personal or mail interview surveys to assess consumer preferences. For all kinds of services and products, from political parties to cleaning fluids, Market Research Analysts make phone calls, mail surveys, conduct interviews in stores and on the street view more

Medical appliance technicians combine a knowledge of human anatomy with math and power tools to create artificial limbs and braces. They work as assistants to orthotists and prosthetists, medical experts who use specially-designed devices to help patients overcome a physical disability. The technicians read prescriptions and detailed information about what the patient needs. They often work from a cast or impression of the limb as a pattern, taking careful measurements with precision instruments view more

Nuclear technology is a new field, but it already has a wide range of applications. So Nuclear technicians work in a variety of places, for the military…the government…public utilities…private companies…universities and hospitals. Some have four year science and math degrees, others have two years of specialized training, earning an associates degree in applied science. On the job, nuclear technicians operate nuclear test and research equipment, monitor radiation, or assist nuclear engineers and physicists in research view more

Making a management decision requires hard data along with wisdom and leadership. That information is supplied by operations research analysts. Operations research is also called management science, and that’s what it is: the science of making decisions and solving problems. It is a field that combines quantitative analysis—mathematical models—with strategic thinking. The goal is improved performance view more

While it can be enormously rewarding to help a child learn, the teaching job is also exhausting, difficult and stressful. Teacher assistants, often called teacher aides, can help relieve some of the pressure teachers face in the classroom. They handle tasks that allow the teacher more time for lesson planning and teaching. Teacher assistants may correct or grade papers… prepare visual aids to enhance the lesson… supervise students in the cafeteria, schoolyard, or on field trips… or tutor students view more

There’s a lot more to traffic than “stop” and “go.” To keep motorists moving, Traffic Technicians perform many complex tasks. They might set the length of time a light stays “red…” Count the number of trucks using a particular bridge… Make sure a road crew is protected and well marked… Or analyze accident reports to determine if a highway interchange is too dangerous… Those are just a few examples, of the work that goes into enhancing safety and the smooth flow of traffic view more