Mathematics Education Applets

Applets Sites
• Manipula Math Applets.  There are nearly 300 applets found in this site for middle school students, high school students, college students, and all who are interested in mathematics. The applets are very interactive, and mathematical topics include applets for middle school students, calculus, vectors, trigonometry, complex numbers, conics, and various other topics.
• Geometry Applets.  This site provides over 100 geometry applets.  They are conveniently categorized by level (easy, intermediate, and advanced).  The applets relate to such topics as area, volume, angles, and the Pythagorean Theorem.

Algebra

• Factoring a trinomial.  This applet allows students to have practice factoring expressions of the form ax2 + bx + c.. It gives them an expression and then gives them up to four hints.  If they cannot find an answer, it gives the answer.
• Graphing Linear Equations.  This site allows you to graph a variety of different functions at the same time. It is like a graphing calculator in some ways. You can graph up to 6 different functions at the same time. It says that this plotter "can plot functions, differentials and integrals, including trigonometric functions. Use this to help with your algebra, trigonometry or calculus homework."
• Coordinates Applet.  A neat way to explore different coordinate systems.
• Newton's Applet.  This applet allows for you to find numerical solutions to equations in one variable. You simply type an equation in the "Equation box" and click on "solve for X or Y," and your solution is shown.
• Slider Graph.  This applet allows you to graph various quadratic and linear functions and then manipulate the constants to determine their effects on the graph.
• Balance Beam Algebra.  This applet lets you solve various linear equations by balancing blocks on a balance beam. It does take a while to open.
• Graphing Vector Calculator.

Calculus
• Function and Derivative Plotter.  This applet  plots a function of one variable and/or its derivative. You can set the names of the x and y axis variables by clicking "Draw Frame."  Then, you enter the function in the "y =" box. Lastly, you click "plot function" and "plot derivative," and these will be plotted. You can change the colors too if you wish.

Geometry
• Geoboard.  Using this 16x16 virtual geoboard you can add as many rubber bands as you wish and you can color in the areas created by the rubber band.
• The Sum of Outer Angles of a Polygon.  This applet cleverly demonstrated a way to see that the sum of outer angles of a polygon add up to 360 degrees.
• Snail Shell.  This applet works with proportions in a very interesting way. When a snail grows up, it makes its room in the shell. The size of new room is k times as large as adjacent room, and the students are able to manipulate the shell and see how proportions work.
• Surface Area and Volume.  This is a website on volume and surface area. It allows you to change the width, depth, and height of a rectangular prism and triangular prism. The applet shows how the volume and surface area change with each changed dimension. It also lets you move the figures around and look at them from different viewpoints.
• Area of the Triangle Formed by the Intersection of Common Tangents to 3 Circles. This applet involves the area of the triangle formed by the intersection of common tangents to three circles. It demonstrates the theorem that the exterior common tangents to three circles intersect on a line.
• An American Mathematical Monthly Problem.
• Triangle Calculators.   A collection of four applets that calculates the lengths and angles within a triangle given 3 sides, 2 sides and the included angle, 2 sides and the non-included angle, or two angles and the included side.
• Polygon Creator.  This applet allows you to create a wide variety of regular polygons by entering in angles and the length of the sides.
• Interactive Geometry.  This site contains numerous interesting, interactive geometry applets, mainly geared towards understanding the fundamentals of Euclidean geometry.
• Angle Bisectors in a Quadrilateral: What is it about? A Mathematical Droodle.
• An Impossible Fork.

Probability
• Spinner.  This is an online spinner. With this you can study the probability of events and it automatically records your results.

Puzzles

Statistics

• Guessing a line of best fit.  This applet allows a person to add up to 50 points onto its green viewing screen. A red line appears on the screen and the person can use the slider on the right to rotate this line until they think it is the best fit. The computer will also calculate a line of best fit and you can see how close you were.

Trigonometry