David Little, Mathematics Department at Penn State University, Applet Collection

These following collections of applets are designed for use in mathematics courses such as Calculus, Cryptography, Geometry, Graph Theory, Probability & Statistics, and more.

Visit David Little's Library here.

Sample Applet:

Reflection of a Point Across a Line

• Explores reflections of points across a line using circles, points and lines to visualize in a dynamic way.


• Visit this applet here.

Common Core Curriculum:

The above applet on Reflections complies with the following sections of the Common Core Curriculum:

• CCSS.Math.Content.HSF-IF.C.7c: Graph polynomial functions, identifying zeros when suitable factorizations are available, and showing end behavior.
• CCSS.Math.Content.8.G.A.2:Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.
• CCSS.Math.Content.8.G.A.3:Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
• CCSS.Math.Content.8.G.A.4:Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.