I pulled the information from the given website and typed this assignment.
Pg 13. Translations
Pg 15. Rotational Symmetry
During my third year, I implemented a new strategy for transformations.
- paper coordinate grid
- coordinate grid on a transparency
- push pin
- piece of cardboard
Plot the original image on the paper grid.
Using a dry erase marker, copy/trace the original image; then using the transparency, complete a selected transformation. For translations, slide the transparency. For reflections, flip the transparency about the line of reflection. For rotations, turn the transparency in the desired direction and degree. Use the push pin to poke holes through the transparency, paper, and cardboard to mark the resulting image coordinates. Remove the transparency, and replicate the pre-image.
Pg 17. Dilations
One year, I completed each section after each lesson and practice for the four transformations. The next year, we completed the entire booklet after all four lessons and practices were done. I'm not sure which had a better result. I think that the sequence depends on the level the students are performing at.
We then wrote a translation statement and completed a table using notation. I think students graphed first and then we completed the table. Graphing is easier for students because it it visual and kinesthetic.
We completed dilations after reflections and rotations.
I do remember stating at the beginning, that if you feel daring, then plot across the axes; however, if you are not sure, then keep it in a single quadrant.