Math for the Fifth, Sixth, Seventh & Eighth Graders

For the students in my upper grade classes, I've been working with them in math. The fifth and sixth graders are learning about discrete mathematics. That means that they get to solve Euler and Hamiltonian paths and circuits. They also get to work on logic problems and game theory. This will be the final week working with them in discrete math. Next week we start working on those fiendishly hard word problems.
The seventh and eighth graders are learning about symmetry. They have worked hard on understanding the four kinds of transformations (rotation, translation, reflection & glide reflection). They know how these transformation relate to symmetry. This week we are going to work with tessellations and learn little about M.C. Escher.