Access to the Web means finding millions of resources. How does anyone choose what to review and even more, what to use? Most often, finding a trusted source that provides thoughtful recommendations makes all the difference. In this case, the sites listed are from the federal government. In 1997, more than 30 Federal agencies formed a working group to make hundreds of federally supported teaching and learning resources easier to find. The result of that work is the Federal Resources for Educational Excellence web site (FREE). The web sites listed below are excerpted with permission.


Here are web sites for teaching mathematics and computer science. Click on the titles to visit the sites.

Calculus on the Web
     offers an interactive environment for learning, practicing,
     and experimenting with the ideas and techniques of calculus.
     It is organized in seven parts: Precalculus; Calculus I, II,
     and III; Linear Algebra; Number Theory; and Abstract Algebra.
     (NSF)
    
Mathematics: Research Overview
     looks at topics of major research in mathematics: image
     creation, statistics, inverse problems, CPU testing, materials
     and nanotechnology, proteins, random graphs, prime numbers,
     optimization, design, financial mathematics, weather and
     climate simulation, rare events, and high-dimensional data
     sets.  (NSF)

Mathematics Across the Community College Curriculum
     provides course descriptions and student projects in
     anthropology, art, biology, business, chemistry, computer
     science, economics, English, environmental science, health,
     marketing, mathematics, nursing, physics, policy studies,
     political science, social services, and urban planning.  (NSF)

Digital Workshops
     offers online professional development for teachers in math
     and science, language arts, and other areas.  Watch
     presentations on vocabulary, phonemic awareness, reading and
     writing in the content areas, algebra, measurement and
     geometry, computation, linear equations, differentiated
     instruction, history, inclusive classrooms, using data to
     improve instruction, No Child Left Behind basics, and more.
     Many states offer professional development credit for teachers
     who participate.  (ED)
   
TeachEngineering
     provides more than  500 lessons and activities for teaching
     engineering content in K-12 science and math classes.  Topics
     include oil and energy consumption, water and electricity,
     mass and volume, various energy sources, heat transfer, solar
     heating systems, collisions and momentum, electrons, cellular
     respiration, biomedical engineering, and more.  Lessons
     connect real-world experiences with concepts and skills
     already taught in K-12 classrooms.  (MA)

Engineering Is Elementary
     provides lessons & overviews on acoustical engineering,
     agricultural engineering (insects), civil engineering (balance
     & forces), environmental engineering (water), industrial
     engineering (simple machines), materials engineering (earth
     materials), mechanical engineering (air & weather). (NSF)

NASA Robotics
     invites students & teachers to start robotics teams, "botball"
     teams, & enter robotics competitions.  Take online courses in
     robotics.  Follow along with scientists who are developing
     technologies to drill for life on Mars.  Find lessons for
     teaching robotics & related topics. (NASA)

Cyberinfrastructure
     examines the convergence of three realities -- the spread of
     the Internet, the shrinkage of computers, and the accumulation
     of databases -- that has led researchers to envision a planet-
     wide grid of computing, information, networking, and sensor
     resources.  Learn about projects to develop the emerging
     cyberinfrastructure.  Find out how researchers are beginning
     to depend on it.  Discover resources for teaching and learning
     about information technology.  (NSF)