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252 lines
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HTML
252 lines
25 KiB
HTML
<!doctype html>
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<!-- Mirrored from www.mathsisfun.com/links/core-grade-2.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 01:01:13 GMT -->
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<title>Grade 2 Common Core Standards</title>
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<h1 align="center">Grade 2 Common Core Standards</h1><p align="center">Here are the <a href="core-index.html">Common Core Standards</a> for Grade 2, with links to resources that support them. We also encourage plenty of exercises and book work.</p><div class="corYrSubj">Grade 2 | Operations & Algebraic Thinking</div>
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<div class="corTitle">Represent and solve problems involving addition and subtraction.</div>
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<div class="corCore"><span class="corCode">2.OA.A.1</span><span class="corDescr">Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. </span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/addition.html">Addition</a></div>
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<div class="corPage"><a href="../numbers/subtraction.html">Subtraction</a></div>
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<div class="corPage"><a href="../mathtest.html">Test your Math</a></div>
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<div class="corPage"><a href="../numbers/fix-equation.html">Fix the Equation</a></div>
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<div class="corPage"><a href="../numbers/addition-column.html">Addition in Columns</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-addition.html">Math Trainer - Addition</a></div>
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<div class="corPage"><a href="../worksheets/addition.html">Addition Math Worksheets</a></div>
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<div class="corPage"><a href="../numbers/addition-tips-tricks.html">Addition Tips and Tricks</a></div>
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<div class="corPage"><a href="../games/speed-math.html">Play Speed Math Challenge</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-subtract.html">Math Trainer - Subtraction</a></div>
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<div class="corPage"><a href="../worksheets/subtraction.html">Subtraction Math Worksheets</a></div>
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<div class="corPage"><a href="../games/number-square-puzzle.html">Play Number Square Puzzle Game</a></div>
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<div class="corPage"><a href="../algebra/word-questions-addition.html">Word Questions - Elementary Addition</a></div>
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<div class="corPage"><a href="../algebra/word-questions-subtraction.html">Word Questions - Elementary Subtraction</a></div>
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<div class="corPage"><a href="../games/mathionaire-addition-quiz.html">Who Wants to be a Mathionaire - Addition Quiz</a></div></div>
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<div class="corTitle">Add and subtract within 20.</div>
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<div class="corCore"><span class="corCode">2.OA.B.2</span><span class="corDescr">Fluently add and subtract within 20 using mental strategies. (See standard 1.OA.6 for a list of mental strategies.) By end of Grade 2, know from memory all sums of two one-digit numbers. </span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/addition.html">Addition</a></div>
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<div class="corPage"><a href="../numbers/subtraction.html">Subtraction</a></div>
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<div class="corPage"><a href="../numbers/addition-table.html">Addition Table</a></div>
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<div class="corPage"><a href="../mathtest.html">Test your Math</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-addition.html">Math Trainer - Addition</a></div>
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<div class="corPage"><a href="../worksheets/addition.html">Addition Math Worksheets</a></div>
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<div class="corPage"><a href="../games/speed-math.html">Play Speed Math Challenge</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-subtract.html">Math Trainer - Subtraction</a></div>
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<div class="corPage"><a href="../worksheets/subtraction.html">Subtraction Math Worksheets</a></div></div>
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<div class="corTitle">Work with equal groups of objects to gain foundations for multiplication.</div>
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<div class="corCore"><span class="corCode">2.OA.C.3</span><span class="corDescr">Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/skip-counting.html">Skip Counting</a></div>
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<div class="corPage"><a href="../numbers/fill-missing4717.html?g=2s20&name=Skip%20Counting%20by%202">Skip Counting by 2</a></div>
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<div class="corPage"><a href="../numbers/even-odd.html">Even and Odd Numbers</a></div></div>
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<div class="corCore"><span class="corCode">2.OA.C.4</span><span class="corDescr">Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.</span></div><div class="corPages">
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<div class="corPage"><a href="../algebra/patterns.html">Patterns</a></div>
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<div class="corPage"><a href="../your-own-number-patterns.html">Make your own Number Patterns</a></div></div><div class="corYrSubj">Grade 2 | Number & Operations in Base Ten</div>
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<div class="corTitle">Understand place value.</div>
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<div class="corCore"><span class="corCode">2.NBT.A.1</span><span class="corDescr">Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:<br />
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a. 100 can be thought of as a bundle of ten tens - called a "hundred."<br />
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b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).</span></div><div class="corPages"></div>
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<div class="corCore"><span class="corCode">2.NBT.A.2</span><span class="corDescr">Count within 1000; skip-count by 5s, 10s, and 100s.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/counting.html">Counting</a></div>
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<div class="corPage"><a href="../numbers/skip-counting.html">Skip Counting</a></div>
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<div class="corPage"><a href="../numbers/fill-missing4c91.html?g=2s100&name=Skip%20Counting%20by%202">Skip Counting by 2</a></div>
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<div class="corPage"><a href="../numbers/fill-missingd5bf.html?g=5s50&name=Skip%20Counting%20by%205">Skip Counting by 5</a></div>
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<div class="corPage"><a href="../numbers/fill-missing48f6.html?g=5s100&name=Skip%20Counting%20by%205">Skip Counting by 5</a></div>
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<div class="corPage"><a href="../numbers/skip-counting-game.html">Skip Counting Game</a></div>
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<div class="corPage"><a href="../numbers/fill-missing2e11.html?g=10s300&name=Skip%20Counting%20by%2010">Skip Counting by 10</a></div>
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<div class="corPage"><a href="../numbers/fill-missingeef2.html?g=10s100&name=Skip%20Counting%20by%2010">Skip Counting by 10</a></div></div>
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<div class="corCore"><span class="corCode">2.NBT.A.3</span><span class="corDescr">Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/numbers-numerals-digits.html">Numbers Numerals and Digits</a></div>
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<div class="corPage"><a href="../activity/count-billion.html">Activity: Count to a Billion</a></div></div>
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<div class="corCore"><span class="corCode">2.NBT.A.4</span><span class="corDescr">Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/ordering-game.html">Ordering Game</a></div>
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<div class="corPage"><a href="../ordering-numbers.html">Ordering Numbers</a></div>
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<div class="corPage"><a href="../algebra/compare-numbers.html">Comparing Numbers</a></div>
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<div class="corPage"><a href="../algebra/compare-numbers-10.html">Compare Numbers to 10</a></div>
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<div class="corPage"><a href="../algebra/compare-numbers-100.html">Compare Numbers to 100</a></div>
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<div class="corPage"><a href="../games/in-order.html">Play In Order Memory Game</a></div>
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<div class="corPage"><a href="../equal-less-greater.html">Equal Less and Greater Than Symbols</a></div></div>
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<div class="corTitle">Use place value understanding and properties of operations to add and subtract.</div>
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<div class="corCore"><span class="corCode">2.NBT.B.5</span><span class="corDescr">Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. </span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/addition.html">Addition</a></div>
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<div class="corPage"><a href="../numbers/subtraction.html">Subtraction</a></div>
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<div class="corPage"><a href="../numbers/addition-table.html">Addition Table</a></div>
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<div class="corPage"><a href="../numbers/fix-equation-10.html">What Makes 10?</a></div>
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<div class="corPage"><a href="../numbers/fix-equation.html">Fix the Equation</a></div>
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<div class="corPage"><a href="../games/reaction-math.html">Play Reaction Math</a></div>
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<div class="corPage"><a href="../numbers/addition-column.html">Addition in Columns</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-addition.html">Math Trainer - Addition</a></div>
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<div class="corPage"><a href="../worksheets/addition.html">Addition Math Worksheets</a></div>
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<div class="corPage"><a href="../numbers/addition-tips-tricks.html">Addition Tips and Tricks</a></div>
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<div class="corPage"><a href="../games/speed-math.html">Play Speed Math Challenge</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-subtract.html">Math Trainer - Subtraction</a></div>
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<div class="corPage"><a href="../worksheets/subtraction.html">Subtraction Math Worksheets</a></div>
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<div class="corPage"><a href="../games/number-square-puzzle.html">Play Number Square Puzzle Game</a></div>
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<div class="corPage"><a href="../games/mathionaire-addition-quiz.html">Who Wants to be a Mathionaire - Addition Quiz</a></div></div>
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<div class="corCore"><span class="corCode">2.NBT.B.6</span><span class="corDescr">Add up to four two-digit numbers using strategies based on place value and properties of operations.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/addition.html">Addition</a></div>
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<div class="corPage"><a href="../numbers/fix-equation.html">Fix the Equation</a></div>
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<div class="corPage"><a href="../numbers/addition-column.html">Addition in Columns</a></div>
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<div class="corPage"><a href="../numbers/math-trainer-addition.html">Math Trainer - Addition</a></div>
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<div class="corPage"><a href="../worksheets/addition.html">Addition Math Worksheets</a></div>
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<div class="corPage"><a href="../numbers/addition-tips-tricks.html">Addition Tips and Tricks</a></div>
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<div class="corPage"><a href="../games/number-square-puzzle.html">Play Number Square Puzzle Game</a></div>
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<div class="corPage"><a href="../games/mathionaire-addition-quiz.html">Who Wants to be a Mathionaire - Addition Quiz</a></div></div>
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<div class="corCore"><span class="corCode">2.NBT.B.7</span><span class="corDescr">Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/addition.html">Addition</a></div>
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<div class="corPage"><a href="../numbers/subtraction.html">Subtraction</a></div>
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<div class="corPage"><a href="../numbers/subtraction-quick.html">Quick Subtraction</a></div>
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<div class="corPage"><a href="../numbers/addition-column.html">Addition in Columns</a></div>
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<div class="corPage"><a href="../numbers/subtraction-by-addition.html">Subtraction by Addition</a></div>
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<div class="corPage"><a href="../worksheets/addition.html">Addition Math Worksheets</a></div>
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<div class="corPage"><a href="../numbers/addition-tips-tricks.html">Addition Tips and Tricks</a></div>
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<div class="corPage"><a href="../numbers/subtraction-regrouping.html">Subtraction by Regrouping</a></div>
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<div class="corPage"><a href="../worksheets/subtraction.html">Subtraction Math Worksheets</a></div></div>
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<div class="corCore"><span class="corCode">2.NBT.B.8</span><span class="corDescr">Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/skip-counting.html">Skip Counting</a></div>
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<div class="corPage"><a href="../numbers/fill-missing6c4b.html?g=25s1k&name=Skip%20Count%20by%2025">Skip Count by 25</a></div>
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<div class="corPage"><a href="../numbers/fill-missinga3a3.html?g=50s1k&name=Skip%20Count%20by%2050">Skip Count by 50</a></div>
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<div class="corPage"><a href="../numbers/fill-missing8a6c.html?g=100s1k&name=Skip%20Count%20by%20100">Skip Count by 100</a></div>
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<div class="corPage"><a href="../numbers/fill-missing48f6.html?g=5s100&name=Skip%20Counting%20by%205">Skip Counting by 5</a></div>
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<div class="corPage"><a href="../numbers/skip-counting-game.html">Skip Counting Game</a></div>
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<div class="corPage"><a href="../numbers/fill-missing2e11.html?g=10s300&name=Skip%20Counting%20by%2010">Skip Counting by 10</a></div>
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<div class="corPage"><a href="../numbers/fill-missingeef2.html?g=10s100&name=Skip%20Counting%20by%2010">Skip Counting by 10</a></div></div>
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<div class="corCore"><span class="corCode">2.NBT.B.9</span><span class="corDescr">Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.) </span></div><div class="corPages">
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<div class="corPage"><a href="../1089algebra.html">Why the Answer is Always 1089</a></div>
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<div class="corPage"><a href="../1089.html">Add Two Numbers and the Answer is Always 1089</a></div></div><div class="corYrSubj">Grade 2 | Measurement & Data</div>
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<div class="corTitle">Measure and estimate lengths in standard units.</div>
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<div class="corCore"><span class="corCode">2.MD.A.1</span><span class="corDescr">Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes. </span></div><div class="corPages">
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<div class="corPage"><a href="../measure/metric-length.html">Metric Length</a></div>
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<div class="corPage"><a href="../measure/us-standard-length.html">US Standard Lengths</a></div>
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<div class="corPage"><a href="../activity/compare-lengths.html">Activity: Compare Lengths</a></div>
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<div class="corPage"><a href="../activity/discover-lengths.html">Activity: Discover Lengths</a></div>
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<div class="corPage"><a href="../activity/personal-measures.html">Activity: Personal Measures</a></div></div>
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<div class="corCore"><span class="corCode">2.MD.A.2</span><span class="corDescr">Measure the length of an object twice, using length units of different lengths for the two measurements; describe how the two measurements relate to the size of the unit chosen. </span></div><div class="corPages">
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<div class="corPage"><a href="../measure/metric-length.html">Metric Length</a></div>
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<div class="corPage"><a href="../measure/us-standard-length.html">US Standard Lengths</a></div>
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<div class="corPage"><a href="../activity/compare-lengths.html">Activity: Compare Lengths</a></div>
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<div class="corPage"><a href="../activity/discover-lengths.html">Activity: Discover Lengths</a></div>
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<div class="corPage"><a href="../activity/personal-measures.html">Activity: Personal Measures</a></div></div>
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<div class="corCore"><span class="corCode">2.MD.A.3</span><span class="corDescr">Estimate lengths using units of inches, feet, centimeters, and meters.</span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/estimation.html">Estimation</a></div>
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<div class="corPage"><a href="../measure/metric-length.html">Metric Length</a></div>
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<div class="corPage"><a href="../measure/us-standard-length.html">US Standard Lengths</a></div>
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<div class="corPage"><a href="../activity/compare-lengths.html">Activity: Compare Lengths</a></div>
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<div class="corPage"><a href="../activity/discover-lengths.html">Activity: Discover Lengths</a></div>
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<div class="corPage"><a href="../activity/personal-measures.html">Activity: Personal Measures</a></div></div>
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<div class="corCore"><span class="corCode">2.MD.A.4</span><span class="corDescr">Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.</span></div><div class="corPages">
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<div class="corPage"><a href="../measure/metric-length.html">Metric Length</a></div>
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<div class="corPage"><a href="../ordering-numbers.html">Ordering Numbers</a></div>
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<div class="corPage"><a href="../measure/us-standard-length.html">US Standard Lengths</a></div>
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<div class="corPage"><a href="../activity/compare-lengths.html">Activity: Compare Lengths</a></div>
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<div class="corPage"><a href="../activity/discover-lengths.html">Activity: Discover Lengths</a></div>
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<div class="corPage"><a href="../activity/personal-measures.html">Activity: Personal Measures</a></div></div>
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<div class="corTitle">Relate addition and subtraction to length.</div>
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<div class="corCore"><span class="corCode">2.MD.B.5</span><span class="corDescr">Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.</span></div><div class="corPages">
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<div class="corPage"><a href="../algebra/word-questions-addition.html">Word Questions - Elementary Addition</a></div>
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<div class="corPage"><a href="../algebra/word-questions-subtraction.html">Word Questions - Elementary Subtraction</a></div></div>
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<div class="corCore"><span class="corCode">2.MD.B.6</span><span class="corDescr">Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, ..., and represent whole-number sums and differences within 100 on a number line diagram. </span></div><div class="corPages">
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<div class="corPage"><a href="../numbers/number-line-scroll.html">Scrolling Number Line</a></div></div>
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<div class="corTitle">Work with time and money.</div>
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<div class="corCore"><span class="corCode">2.MD.C.7</span><span class="corDescr">Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m. </span></div><div class="corPages">
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<div class="corPage"><a href="../worksheets/time.html">Time Worksheets</a></div>
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<div class="corPage"><a href="../measure/clock-date-time.html">Date and Time Clock</a></div>
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<div class="corPage"><a href="../time-clocks.html">Clocks - Digital and Analog</a></div>
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<div class="corPage"><a href="../time-clocks-analog-digital.html">Analog and Digital Clocks Animation</a></div></div>
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<div class="corCore"><span class="corCode">2.MD.C.8</span><span class="corDescr">Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $(dollars) and c(cents) symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have? </span></div><div class="corPages">
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<div class="corPage"><a href="../money/money-master.html">Money Master</a></div>
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<div class="corPage"><a href="../money/make-amount.html">Make the Amount</a></div>
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<div class="corPage"><a href="../money/currency.html">Currencies of the World</a></div>
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<div class="corPage"><a href="../activity/counting-coins.html">Activity: Counting Coins</a></div></div>
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<div class="corTitle">Represent and interpret data.</div>
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<div class="corCore"><span class="corCode">2.MD.D.9</span><span class="corDescr">Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object. Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units.</span></div><div class="corPages">
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<div class="corPage"><a href="../data/data-graph.html">Data Graphs</a></div>
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<div class="corPage"><a href="../data/survey-results.html">Showing the Results of a Survey</a></div></div>
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<div class="corCore"><span class="corCode">2.MD.D.10</span><span class="corDescr">Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple put-together, take-apart, and compare problems using information presented in a bar graph. </span></div><div class="corPages">
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<div class="corPage"><a href="../data/bar-graphs.html">Bar Graphs</a></div>
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<div class="corPage"><a href="../data/data-graph.html">Data Graphs</a></div>
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<div class="corPage"><a href="../data/pictographs.html">Pictographs</a></div>
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<div class="corPage"><a href="../data/bar-graph.html">Make a Bar Graph</a></div>
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<div class="corPage"><a href="../data/survey-results.html">Showing the Results of a Survey</a></div></div><div class="corYrSubj">Grade 2 | Geometry</div>
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<div class="corTitle">Reason with shapes and their attributes.</div>
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<div class="corCore"><span class="corCode">2.G.A.1</span><span class="corDescr">Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. (Sizes are compared directly or visually, not compared by measuring.) Identify triangles, quadrilaterals, pentagons, hexagons, and cubes. </span></div><div class="corPages">
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<div class="corPage"><a href="../geometry/hexagon.html">Hexagon</a></div>
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<div class="corPage"><a href="../activity/shapes-sorting.html">Activity: Sorting Shapes</a></div>
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<div class="corPage"><a href="../games/memory/index.html">Concentration Memory Game</a></div>
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<div class="corPage"><a href="../geometry/quadrilaterals-interactive.html">Interactive Quadrilaterals</a></div>
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<div class="corPage"><a href="../games/math-match-game.html">Play Math Match Memory Game</a></div>
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<div class="corPage"><a href="../quadrilaterals.html">Quadrilaterals - Square Rectangle Rhombus Trapezoid Parallelogram</a></div></div>
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<div class="corCore"><span class="corCode">2.G.A.2</span><span class="corDescr">Partition a rectangle into rows and columns of same-size squares and count to find the total number of them. </span></div><div class="corPages">
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<div class="corPage"><a href="../geometry/area.html">What is Area?</a></div></div>
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<div class="corCore"><span class="corCode">2.G.A.3</span><span class="corDescr">Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. </span></div><div class="corPages">
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<div class="corPage"><a href="../fractions-match.html">Match the Fraction</a></div>
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<div class="corPage"><a href="../fractions-interactive.html">Interactive Fractions</a></div></div><p> </p><!-- #EndEditable -->
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