Whole Numbers and Decimals on a Number Line Tool. This is a flexible number line for placing numbers, estimating relative to benchmarks, and rounding. This tool works with numbers from 0.001 to 1,000,000. It allows you to write a prompt and work with up to four numbers at a time across many number ranges and various visual presentations.

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Explore two lessons from our breakthrough fractions curriculum. Each lesson uses visual models to develop students' thinking as it progresses from concrete to abstract representations.
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