My geometry students all took the Chapter 6 test yesterday and are about to start learning about geometric transformations in the next chapter. For all of you out there who aren't familiar with the term geometric transformations, I assure you that you probably know exactly what they are! Basically it's reflections of shapes, rotations, and translations (when you just slide something over without changing it). So instead of diving right into the chapter in the book, I decided to do a little activity with them today. I found this lesson plan on PBS, which is the best resource for teachers if you ask me:
The challenge is that given a square split into 8 parts (as seen in that activity), there are 13 unique ways to display 1/2 without simply rotating or reflecting a previous way. The students got 7 minutes to try to come up with all of them in partners of their choosing and then we went one by one in the groups to fill in the boxes online. I was able to get the math department projector for today too so we could all watch as each answer was submitted to see if it was right or wrong.
The cool thing about this lesson was that not only did students get introduced to reflections and rotations (we had a discussion after every rejected answer based on it being a previous box simply flipped or rotated) but they were literally cheering when we got the last one together. It was awesome to see my students that excited about math at 8 a.m.!
All of my little kiddos hard at work!