It's just a great idea for an activity. But the questions that they suggest seemed sort of lame to me.
Their suggested lesson sequence is:
- Show the chart
- Ask kids: How many squares are on the chart?
- Ask kids: Where would 50 be? 100? What other landmarks should we put on the chart?
- Finally: Where would 7,396 be?
If there's anything that I've learned from Dan Meyer, it's that questions 4 and 3 should be swapped. That's what we did, and it went great.
[The post-its mark the kids initial guesses as to where 7,396 would be.]
Prep time was about 45 minutes, since I had to make a few files for this activity. It took me 30 minutes to paste the 10k chart together, but you're probably better with scissors and tape than I am. Files are here, if you'd like 'em.