# Roman Numerals, Place Value, & Expanded Form card set + base ten mat

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Common Core Standards
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In a multi-age classroom like mine, we tend to do a lot of activities that cater to multiple students’ needs simultaneously. It’s like playing matchmaker. “Oh, you’re learning about expanded form? I’m doing place value." *swipes right*

CCSS doesn't say a whole lot about Roman numerals, but it has puh-LENTY to say about other concepts that happen to infuse nicely with Caesar’s 1-2-3’s. Namely, place value (2.NBT.A.1, 4.NBT.A.1) and expanded form (2.NBT.A.3, 4.NBT.A.2). I first got the idea for these cards during a one-on-one session with a student who has dysgraphia. He needed a tactile way to “build” Roman numerals using a base ten organizer. Each number card is sized and color-coded according to its place value, so students can lay them on top of one another and see how a large number is composed of ones, tens, hundreds, and (if applicable) thousands. The best part: using the plus sign cards, students can also take the cards off the base ten mat and arrange them to represent the number in expanded form. All while learning how to read Roman numerals. SO awesome. You’re welcome.

So here's what you do:

1) Print the card set and corresponding base ten mat in COLOR. Black & white won’t do; the colors are meant to aid the student in arranging the cards.

2) Cut the cards out on the dotted lines, then laminate ‘em (and the mat).

3) Use the mat as a guide for “building” your numbers. As you’ll soon notice, the size of each card directly corresponds with its place value. “Thousands” cards and the biggest and will span the width of the mat, while “ones" cards are the smallest (only one column width in size). This set can be used to build numbers from 1 to 9,999.

Warning: use these on the Idea of March at your own risk. Et tu, Teach.
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16 pages
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