Calculus Grapher

A nice applet from the PhET project at the University of Colorado enabling you to quickly "sketch" a graph of a particular shape and to see graphs of its derivative and integral.

SticiGui

There are lots of applets embedded in the relevant locations in this full-length interactive statistics text written by Professor Philip Stark at UC Berkeley.

Basic Descriptive Statistics

This applet from the UK's National STEM Centre allows you to input a mini frequency distribution and then look at various representations of it.

GeoGebra Calculus Applets Project

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This is a collection of applets created by Marc Renault of Shippensburg University. Marc's "goal is to make a complete library of applets for Calculus I that are suitable for in-class demonstrations and/or student exploration."

Introduction to Area Under a Curve

In this applet from the GeoGebra Calculus Applets Project, you enter a function and position endpoints to see what the value of the integral is.

The Area Function

This applet from the GeoGebra Calculus Applets Project provides a way to explore the area function. The default integrand can be changed by right-clicking on the curve.

Solving triangles

Practice solving 30-60-90 triangles or right triangles, or a mix of both at thatquiz.org, a site which allows you to customize practice on basic elementary, middle, and secondary school math topics. Random numbers are automatically generated for a series of problems based on the difficulty level and problem type(s) you choose.