During part of the lesson the students will work in the computer lab using "Geometers Sketchpad" software that will be downloaded on the computers. I pity the fool who don't tesselate the plane Although we have described it as a combination of two transformations, it is often appropriate to think of it as a single motion. This is the largest frieze group and requires you to translate and then reflection across the horizontal axis and reflection across a vertical axis. Class IV shows translation and o rotations. It has the translation symmetry common to all frieze patterns. Do you see the centers of rotation lie on the reflection axes?
Symmetry in Nature
Next year we will increase that to 10 math classes a week. His is known for his Barack Obama "Hope" poster used in the U. This may surprise you as to the issues that they are concerned about. If points x and y are 3 cm apart, then after the transformation they should still be 3 cm apart. You may want to provide your students with a worksheet which states the definition of "reflective symmetry and line of symmetry" and a series of objects and designs in which your students could find all lines of reflective symmetry.