Iowa Core K-12 Mathematics (PDF) - Green Hills AEA

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Grade 1 Overview Operations and Algebraic Thinking • Represent and solve problems involving addition and subtraction. • Understand and apply properties of operations and the relationship between addition and subtraction. • Add and subtract within 20. • Work with addition and subtraction equations. Number and Operations in Base Ten • Extend the counting sequence. • Understand place value. • Use place value understanding and properties of operations to add and subtract. Mathematical Practices 1. Make sense of problems and persevere in solving them. 2. Reason abstractly and quantitatively. 3. Construct viable arguments and critique the reasoning of others. 4. Model with mathematics. 5. Use appropriate tools strategically. 6. Attend to precision. 7. Look for and make use of structure. 8. Look for and express regularity in repeated reasoning. Measurement and Data • Measure lengths indirectly and by iterating length units. • Tell and write time. • Represent and interpret data. Geometry • Reason with shapes and their attributes. Disclaimer: This document is up-to-date as of 11/17/2010. The language provided may not be Page 16 of 98 modified in any way. The most current Iowa Core can be found at http://iowacore.educateiowa.gov.
Operations and Algebraic Thinking 1.OA Represent and solve problems involving addition and subtraction. 1. Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. 2 (1.OA.1.) 2. Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. (1.OA.2.) Understand and apply properties of operations and the relationship between addition and subtraction. 3. Apply properties of operations as strategies to add and subtract. 3 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.) (1.OA.3.) 4. Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8. (1.OA.4.) Add and subtract within 20. 5. Relate counting to addition and subtraction (e.g., by counting on 2 to add 2). (1.OA.5.) 6. Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). (1.OA.6.) Work with addition and subtraction equations. 7. Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2. (1.OA.7.) 8. Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = – 3, 6 + 6 = . (1.OA.8.) Number and Operations in Base Ten 1.NBT Extend the counting sequence. 1. Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral. (1.NBT.1.) Understand place value. 2. Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: a. 10 can be thought of as a bundle of ten ones — called a "ten." b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones). (1.NBT.2.) 2 See Glossary, Table 1. 3 Students need not use formal terms for these properties. Disclaimer: This document is up-to-date as of 11/17/2010. The language provided may not be Page 17 of 98 modified in any way. The most current Iowa Core can be found at http://iowacore.educateiowa.gov.
Page 1 and 2: Mathematics November 17, 2010
Page 3 and 4: Introduction Iowa Core Mathematics
Page 5 and 6: These Standards endeavor to follow
Page 7 and 8: How to read the grade level standar
Page 9 and 10: 4. Model with mathematics. Mathemat
Page 11 and 12: Mathematics | Kindergarten In Kinde
Page 13 and 14: Counting and Cardinality K.CC Know
Page 15: Mathematics | Grade 1 In Grade 1, i
Page 19 and 20: Mathematics | Grade 2 In Grade 2, i
Page 21 and 22: Operations and Algebraic Thinking 2
Page 27 and 28: 2. Measure and estimate liquid volu
Page 33 and 34: Understand decimal notation for fra
Page 39 and 40: 7. Apply and extend previous unders
Page 43 and 44: Ratios and Proportional Relationshi
Page 45 and 46: Expressions and Equations 6.EE Appl
Page 49 and 50: Ratios and Proportional Relationshi
Page 51 and 52: Geometry 7.G Draw, construct, and d
Page 55 and 56: The Number System 8.NS Know that th
Page 57 and 58: 3. Describe the effect of dilations
Page 59 and 60: Mathematics | High School—Number
Page 61 and 62: The Real Number System N-RN Extend
Page 63 and 64: Mathematics | High School—Algebra
Page 65 and 66: Seeing Structure in Expressions A-S
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6. Solve systems of linear equation
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Functions Overview Interpreting Fun
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9. Compare properties of two functi
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Mathematics | High School—Modelin
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Mathematics | High School—Geometr
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Geometry Overview Congruence • Ex
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Similarity, Right Triangles, and Tr
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(IA) Use diagrams consisting of ver
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Statistics and Probability Overview
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4. Use data from a sample survey to
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Note on courses and transitions The
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First quartile. For a data set with
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Tape diagram. A drawing that looks
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Table 2. Common multiplication and
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Sample of Works Consulted Existing
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Schmidt, W., Houang, R., and Cogan,
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Iowa Core K-12 Mathematics (PDF) - Green Hills AEA

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