Then J finished off the last 4 blocks of each column. (He's working on the 4s here.)
Then we went back and filled in the right hand side of each block, with the numerals 0 to 9 in each column. So we created a column of numbers 0 to 9, then a column of 10 to 19, then one of 20 to 29, and so forth. Here J is working on the 40s.
Zoo Boy finishes out the 90s column. I really thought it might take a couple of days to accomplish this, as I figured the boys would get bored with it. But much to my surprise, they actually picked up a head of steam and got more enthusiastic about writing the numbers the further along we got. The entire chart only took us about half an hour to complete, and the kids were never looking for a break.
This is a nice place to break for a few days. I'm taking the Grace puppy to a training seminar during the day for the next three days, so tune back in next week for more math fun and adventures!