What’s going on here? What’s the misconception? What is there to build on?
Thanks to Nathan Kraft for the submission. Click on the blue words to check out his blog and this blue word to follow his tweets.
Category: The Number System
Why is this mistake so attractive for students to make? If you saw this mistake in your classroom, what would your next step be?
Here are the questions:
Here are the student answers:
What’s he messing up on? Focus in on #2. How did he get 11 as his answer?