math work?

[Rose-Roget]

Ds was telling me about a work that the 3rd graders were doing today that he wanted to do (I explained that he needed to learn different works first). I was just curious what this work was, though, but could only get a bit of a description out of him.

He said it was the 100's board, but all the numbers were flipped over and there is a "C with a line through it on then number 100" and there may or may not be different symbols on the other numbers. He said he thinks the goal is to put them in order flipped over. ? ?

Any idea what this work is? Like I said, it's just curiosity.

[MattBronsil]

Originally Posted by Rose-Roget

Ds was telling me about a work that the 3rd graders were doing today that he wanted to do (I explained that he needed to learn different works first). I was just curious what this work was, though, but could only get a bit of a description out of him.

He said it was the 100's board, but all the numbers were flipped over and there is a "C with a line through it on then number 100" and there may or may not be different symbols on the other numbers. He said he thinks the goal is to put them in order flipped over. ? ?

Any idea what this work is? Like I said, it's just curiosity.

I'm just guessing...Roman Numerals 100 board? (And the line through the C is just a mark that shouldn't be there?)

Again, it's a guess.

[Rose-Roget]

Ah, I bet you're right! He said the number 1 had a "1" on it, but I bet it was an "I". So smart. Thanks for clearing that up!

[MattBronsil]

Originally Posted by Rose-Roget

Ah, I bet you're right! He said the number 1 had a "1" on it, but I bet it was an "I". So smart. Thanks for clearing that up!

I am only smart because I grew up in Montessori. Haha. :-) Still ask the teacher if you can. I am curious. :-D

[Rose-Roget]

I'll ask her one of these days and let you know.

[rumsmyname]

Acoording to my now 5th graders memory

the 100's board would also be used with a set of cards containing problems. The numbers would be turned over unless it was an answer to one of the cards. Within the stack, correct answers corresponded 1 to 1 with places on the board. THus, if an answer duplicated another problem's answer, the child knew one of the answers was wrong. This was the only way she remembers seeing it used other than the counting use.

Perhaps....