Ice Cream #MFM2P

From end of September, my “would you rather” styled ice cream problem. It’s not fully would you rather style, but it’s a good question prompt for this. The problem is probably mostly styled after Garfield Gini-Newman‘s “choose the better or best” style problems.Summary 2016.09.27 (1).png

Students were presented with the three ice cream options above & asked to guess which one offers the most ice cream? Looking back I wish I had made the images to scale … I think I will adjust that before I use this one again. (Editable image file here)

Most students guessed the block would have the most ice cream.

Groups were sent to their boards to solve:

I had to answer questions about what the various formulas on their formula sheet meant. For example, many are unsure how to read V = lw + wh + lh and how to then use it, which operations to use, etc.

Many groups did not notice the discrepancy in units between the various shapes. We had a discussion about converting units. I did some direct teaching about how students tend to make less mistakes if they convert the lengths BEFORE calculating volume, rather than trying to convert cubic units (if calculating by hand). I sent students back to their boards to correct their work so that they have comparable units for each shape.

First time I’ve done this one. I like it & will use it again w/ a few tweaks.

All materials here.

– Laura Wheeler (Teacher @ Ridgemont High School, OCDSB; Ottawa, ON)

WYR: A pound of dimes or quarters?

One of the bellwork activities I like to use are Would You Rather (WYR) questions.

John Stevens (inspire by ~Hedge~) put together a WYR comparing values of coins based on weight with US coins. I liked the idea & decided to put together my own for the first day of semester 2, but using Canadian currency. Here it is:

Capture

Which choice would you rather? Don’t forget to justify your answer!

– Laura Wheeler (Teacher @ Ridgemont High School, OCDSB; Ottawa, ON)

Bellwork: “Would you rather” Math

A continuation in my Bellwork series. You can find a description of what “bellwork” is here.

This one I do comes from John StevensWould You Rather blog.

For example, the other day we used this problem from his blog:

This problem required my students to do some currency conversions. These conversions helped my students review ratios & proportions from MFM1P & serves as a warm-up for the proportions they’ll be working with for similar triangles in this MFM2P class.

Some students simply used Google to convert the currency. Some students converted pesos into euros. Others converted euros into pesos. Still others yet converted both into Canadian dollars. I love when my students can see that there is usually more than one way to solve a problem!

The one thing I will admit is that these “would you rather” problems can take us longer than the usual 10-15 minutes I allow for bellwork. So I try to pick very simple ones (sometimes making my own) or I use them as a jumping off point to the day’s main activity – sometimes the “would you rather” IS the day’s activity if it’s complex enough of a problem.

Stay tuned for more Bellwork ideas to come . . .

– Laura Wheeler (Teacher @ Ridgemont High School, OCDSB; Ottawa, ON)