This week in my pre-Algebra class, we reviewed order of operations. To give my students an opportunity to be creative, I assigned an activity that someone in the #MTBoS had either tweeted or blogged about – writing expressions that create the hours on a clock face. (If you know who that was, please mention it in the comments so I can give proper credit.) [Update: I see that the blog where I found this activity is called Coefficients of Determination, but I can’t find that blog to identify the author. Thank you, whoever you are!]
I suggested to students that they divide up the work between the members of the group. Then, when they were done writing their expressions, I suggested they trade with someone else in the group to check their answers. I stressed that everyone was responsible for all 12 expressions being correct. Once the problems had been checked, they were copied onto a blank clock face that I downloaded and enlarged on the copier. Next week I will laminate them and hang them in my room.
The kids really enjoyed their work and definitely got involved in trying to show off what they knew. I suggested that they include exponents, decimals, fractions, etc. Working in groups of 3 or 4, everyone was able to finish their clock in one 45-minute class period.
I think this one is definitely a keeper! I will use it with my sixth graders when we come to order of operations as well.
Here are some pictures of the works in progress: