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Teacher Resources from Howard County Public School System: "In this unit, students will know that there are numbers that are not rational, and approximate them by rational numbers. Students should know that numbers that are not rational are called irrational and understand that every number has a decimal expansion. For rational numbers students should show that the decimal expansion repeats eventually. Students should also use rational approximations of irrational numbers to compare the size of irrational numbers and approximately locate them on a number line diagram. "
Supports the following Standards of Mathematical Practice
• 2 Reason abstractly and quantitatively.
• 7 Look for and make use of structure.
• 8 Look for and express regularity in repeated reasoning.
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