A small rectangular prism measures 7 inches x 2.3 inches x 4.6 inches. How many times could it fit in a larger rectangular prism with a volume of 39.3 cubic feet?
Nissan is going to stuff the trunk of a Nissan Rogue full of boxes of Girl Scout cookies. Nissan lists the Rogue’s trunk space as 39.3 cubic feet. A box of cookies measures 7 inches x 2.3 inches x 4.6 inches. How many boxes will they fit in the trunk?
Show this video.
- Ask for questions.
- Ask for wrong answers.
- Ask for estimates.
- Ask for important information.
- Ask for estimates of the capacity of the trunk and the dimensions of the box of cookies.
- Show the answer.
- Ask for reasons why our mathematical answer differs from the actual answer.
Treatment #1 and Treatment #2 are as different from each other as Treatment #2 is from Treatment #3.
A layperson might claim that Treatment #2 has made Treatment #1 real world and relevant to student interests. But the real prize is Treatment #3, which doesn’t just add the world, but changes the work students do in that world, emphasizing formal and informal mathematisation.
“Real world” guarantees us very little if the work isn’t real also.
I deleted this screen from Act One because I wanted students to think about the information that might be useful and to estimate that information. I can always add this information, but I can’t subtract it.
I added a ticker to the end of the video because that’s my house style.
I deleted a bunch of marketing copy because it was kind of corny and because it broke the flow of their awesome stop motion video.
I left the fine-print advisory that you should “never block your view while driving” because the youth are impressionable.
[via whoever runs the Bismarck Schools’ Twitter account]