EggMath is "a collection of web modules (including many interactive applets) covering different topics in mathematics related to eggs." This unusual site helps grade school students understand concepts such as symmetry, spherical geometry, and exponential growth. The authors of the site have even invented special terminology to make the material more fun for students. For example, the White / Yolk Theorem is an interesting interpretation of a theorem from topology, which states that any shape can be divided into equal halves with only one straight cut. Embryo Calculus is another amusing and educational section of the site.