I was excited when @MrsForest invited me to be the blogger of the week for @MathICTM. Followed by terror as I have not been blogging much lately. The last two months included having a student teacher quit after five weeks (I WILL NOT blog about that, but I learned SO MUCH from that experience and I am a better teacher today because of it) and holding our annual four-day Snowball retreat which included about 140 people from across our district that I realized that I have been a little bit busy 🙂 so I’ll cut myself some slack. Here are some quick class thoughts that I have had recently…
Surface Area of a Sphere: USE CLEMENTINES!
I searched for a Geogebra way to derive the surface area of a sphere but came up short. I’ve been happy with all the applets I have found for the other various formulas and was sad not to find quite what I was looking for. I searched Twitter and found this gem:
And then found this video:
Awesomeness! My room smelled awesome because of the clementines and I really do believe that students will remember the formula for a while. I will tweak it a little for the future as not all of my students drew “good” circles and so some had less than 4 circles worth of area. However, overall I liked the activity and the students enjoyed it as well.
There is nothing much better than a good prop in class. When I taught about density this week I bought honey, karo syrup, liquid dish detergent, water, olive oil, and rubbing alcohol. I dyed each with food coloring and layered the liquids in class in a narrow flower vase. My students got a kick out of doing science in a math class which I thought was awesome. Unfortunately, I did not get a picture before we “played” with the finished product by dumping it into an empty water bottle to see if it would separate again – it did, but it wasn’t as “pretty”. I totally recommend the prop.
Game: Lucky Lottery
After looking through other featured bloggers of the week from @MathICTM, I found a quick little game called Lucky Lottery. I used it in class today (which was going to be a boring worksheet review, don’t judge me too hard) and the game was engaging and I really knew what students KNEW and what they will need help with before their test this week. I highly recommend it for a quick easy set up game. Side note, I also made a SmartNotebook with 100 numbers on it. You need to tweak the slides to make the spaces a little bigger but it worked well.