Using trapezoids, the area under a curve can be determined. The Trapezoid rule is demonstrated to show exactly how that can be accomplished.

This site from MathWorld.com give a formula for a two point trapezoidal approximation for the area under a curve.

This learning check activity tests students understanding of the Trapezoidal Rule, Simpson's Rule, and the Midpoint Rule.

Students will learn how to program the TI 83/84 Plus graphing calculator to approximate the area under a curve using Left,Right,Midpoint Riemann Sums, and Trapezoid Rule, and Simpson's Rule.

The integration tool integrates and graphs functions that student enter into the tool. The tool uses the trapezoidal rule, Riemann sums, and Simpson rule to integrate the function.

This lesson puts integration to work. Lessons include integral, derivatives, antiderivatives, and indefinite integrals. The Trapezoidal and Simpson's Rules are highlighted. The examples are enhanced using Live, Math and Scientific...

The resource is a graphing calculator program used for numerical integration. The program uses trapezoid and Simpson approximations. Instructions on how to use the programs are included.

Hotmath provides 24 practice problems dealing with integrals. Each of the practice problems include a step-by-step guide for finding or evaluating the integral.

Good site explaining the various methods for numerical integration.