tens/ones

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Home : 2004 : January : 4

tens/ones
By Mrs. K. Martin

If you are looking mostly for the concept of trading ones for tens, and not the actual money counting, I have used a few of these ideas for place value trading. One that worked well was using any kind of beans or small counters
as one, aned then placing ten of them into a small cup (size of a medicine cup or so)to stand for tens while using place value mats, even if they just have a ones & tens column on them. The kids see that you must have ten to 'build' on to the next step. You may want to write '10' on the bottom of the cup, and make sure the students understand that as soon as you have ten ones (from

the ones place, not the source of beans) they need to be used to build a ten. You may also want to try any kind of building blocks that snap together, you can find them at any teaching store. The key idea if for students to to understand that a ten is built out of ones, and can also then be broken back down into ones. You could also use tounge depressors for tens with ten beans glued to them, and then use single beans as ones. Hope this helps!