A few days ago I foolheartedly blogged all about the great domain and range learning that would soon be happening in my classroom. Eeeert, stop the record! Abandon ship! Abandon ship!
Domain and Range are always hard, but this year? Whoa. I'm getting my you-know-what handed to me by the coordinate plane. For whatever reason, my cohort of kids all seem to have visual-spacial troubles so graphing is really, really hard for them. Even plotting points is tough. So when it comes to domain and range, it's going to take a lot more practice than I have ever given before.
My plan today was to give a Domain & Range scavenger hunt to assess student understanding, but we're going to need a little more practice first. Seeing domain and range - especially range - of a graph is proving to be particularly difficult for my students this year. Assessing now didn't seem fair. To give a bit more practice before grades, I made these extra domain and range practice cards (you can find these cards in the "freebies" section of the sidebar (link to my dropbox)>
To give my students extra practice without making it feel like endless practice, I printed the cards you see in the picture on fun blue paper. I set a stack on each student table to share and gave each individual student an answer sheet. Everyone also had to identify which graphs showed functions and which didn't. I saw a lot of good work that made me really hopeful! I think their confidence improved, too:)
Down the road some...
For even more practice, my Algebra 2 students completed a collaborative activity with absolute value graphs (seen above). This activity worked as a sort of "Math write around" where each student in each group added what they could to the graph. The little pieces of paper were for students to add: domain, range, increasing, decreasing, y-intercept, x-intercepts and the function. My students were SO ENGAGED with each other during this activity - way more so that I had anticipated! I heard so much great Math talk as they collaborated.
Domain & Range as... decor?