Monday, January 13, 2014

The 10K Chart

I don't take any credit for any of this. The Investigations curriculum took me 99% of the way there with their 10,000 chart.

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:
  1. Show the chart
  2. Ask kids: How many squares are on the chart?
  3. Ask kids: Where would 50 be? 100? What other landmarks should we put on the chart? 
  4. 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.


  1. Glad to know somebody else is klutzy with the "3D" stuff (for me not the fine motor stuff, but the bigger part). Sharing ;)

  2. I love this, and want to use it with our fourth graders. So the 10k chart is made from 16 20 x 25 grids in a 4 x 4 array? In one of the pictures it looks like a 5 x 5 array of charts.
    Since I'm always conflicted regarding number grids vs. number lines, something interesting to think about might be: Imagine cutting the grid in horizontal rows (turning it into a number line) taping it that way, and laying it in the hallway. Walk down the hall and stop where 7,396, or any other number(s) would be. How far would you have to walk to get to that spot?
    Anyway, thanks for sharing.

    1. OK, so yeah, about the number of pages.

      That's actually a 5 x 4 grid, but because I needed to fold it up to get it on the subway, it ended up looking like a 4 x 4.

  3. I probably could/should have figured out that a 10k chart would need 20 of those 25 x 20 grids. But it's getting late and the Knicks just lost to the Bobcats.