To introduce our unit on ratios this year, I started with the following picture and asked students to notice/wonder about it and if they could figure out what was meant by the word “ratio”
I also had this one ready to follow up with if I needed to.
Then I used a couple of Desmos activities. This is one that I modified from something I found from Andrew Stadel. Then I also created this card sort. There are multiple correct options for the card sort I created.
Then I used an I Spy activity. I blogged about it here.
I love this Open Middle problem on equivalent ratios.
I like this Which One Doesn’t Belong? around this time in the unit.
Then we get into unit cost and finding the better buy. Some years I have students look up items online and find the unit cost of the items, but I’m finding that more and more websites already give the unit cost on them.
I used Robert Kaplinsky’s “Which Ticket Option is a Better Deal?” I definitely want to spend more time on this one next year and really focus on question 4.
As I was going through my stuff when writing this post, I also came across this video. I always forget about it and have never actually used it in my classroom.