1. Riemann Integral  
   Bert G. Wachsmuth, Math. Dept., Seton Hall Univ., South Orange, NJ
2. Riemann Sum     
   Eric W. Weisstein, MathWorld, Wolfram Research, Inc., Champaign, IL  
3. Riemann Integral  
   Eric W. Weisstein, MathWorld, Wolfram Research, Inc., Champaign, IL  
4. The Riemann Sum Approximation to an Integral  
   Christopher Small, Math. Dept., University of Waterloo, Ontario, Canada  
5. Riemann Sums  
   Lawrence S. Husch, Mathematics Department, University of Tennessee, Knoxville, TN  
6. Principles of Integration    
   Robert Beardmore, The METRIC Project, Math. Dept., Imperial College, London, UK  
7. The Area Problem and the Definite Integral  
   Mohamed A. Khamsi, Univ. of Paris, Helmut Knaust, Univ. of Texas, S.O.S MATHematics  
8. Riemann Sums  
   Michael E. Moody, Dept. of Math., Harvey Mudd College, Claremont, CA  
9. Numeric Computation of Integrals: Left-Hand and Right-Hand Sums applet  
   John Michel, Math. Dept., Marietta College, Marietta, OH
10. Numerical integration rules applet  
    Dan Sloughter, Math. Dept., Furman University, Greenville, SC  
11. Left and Right Riemann Sums applet  
    Ronald Miech, Math. Dept., Univ. of California Los Angeles, CA  
12. The Calculus Applet   
    Lynn Ziegler, Computer Science, College of St. Benedict/St. John's Univ., Collegeville, MN
13. Methods for Numerical Integration applet   
    Nicholas Exner, Math. Dept., University of Illinois at Urbana-Champaign, IL

(c) John H. Mathews 2004