NCTM Navigations Lesson Alignment with Common Core State Standards for Mathematics These lessons may need to be adapted or modified to align with the CCSS. Navigating through: Algebra Number and Operations Measurement Geometry Data Analysis and Probability in Grades PreK-2 NCTM National Council of Teachers of Mathematics Common Core Aligned Lessons – NCTM Navigations Series, Grades K-2 Kindergarten CCSS Cluster/Standard Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. Navigating Book Navigating through Number and Operations in Prekindergarten Grade 2, 2004 Lesson Title and Page Number Chapter 1: Choose a Number Pages 16-18 K.OA.3 Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1). Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. K.OA.2. Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem. Mathematical Practice focus is indicated in bold: 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. Navigating through Algebra in PrekindergartenGrade 2, 2001 Chapter 12: How Many are Under the Cup? Pages 34-35 Mathematical Practice focus is indicated in bold: 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. Navigating through Number and Operations in Prekindergarten Grade 2, 2004 Chapter 2: Frames Pages 46-48 Mathematical Practice focus is indicated in bold: 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. K.OA.3 Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1). Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. Student Behaviors (Mathematical Practices) to Look For… 2 DRAFT: North Carolina Department of Public Instruction, 2012 Navigating through Number and Operations in Prekindergarten Grade 2, 2004 Chapter 2: Park Your Car Pages 49-51 Analyze, compare, create, and compose shapes. K.G.6. Compose simple shapes to form larger shapes. For example, “Can you join these two triangles with full sides touching to make a rectangle?” Navigating through Geometry in Prekindergarten – Grade 2 Chapter 1: Shapes from Shapes Pages 14-16 Identify and describe shapes (squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres). K.G.1 Describe objects in the environment using names of shapes, and describe the relative positions of these objects using terms such as above, below, beside, in front of, behind, and next to. Navigating through Geometry in Prekindergarten – Grade 2 Chapter 1: Match My Grid Pages 36-38 Describe and compare measurable attributes. K.M.1 Describe measurable attributes of objects, such as length or weight. Describe several measurable attributes of a single object. 2. Directly compare two objects with a measurable attribute in common, to see which object has “more of”/“less of” the attribute, and describe the difference. For example, directly compare the heights of two children and describe one child as taller/shorter. Navigating through Measurement in Prekindergarten – Grade 2 Chapter 1: Body Balance Pages 14-15 Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. K.OA.4. For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation. 3 Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. DRAFT: North Carolina Department of Public Instruction, 2012 Describe and compare measurable attributes. K.M.1 Describe measurable attributes of objects, such as length or weight. Describe several measurable attributes of a single object. 2. Directly compare two objects with a measurable attribute in common, to see which object has “more of”/“less of” the attribute, and describe the difference. For example, directly compare the heights of two children and describe one child as taller/shorter. Navigating through Measurement in Prekindergarten – Grade 2 Chapter 1: Scavenger Hunt Pages 16-17 Classify objects and count the number of objects in each category. K.MD.3 Classify objects into given categories; count the numbers of objects in each category and sort the categories by count.1 Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: Junk Sort Pages 22-24 4 Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. DRAFT: North Carolina Department of Public Instruction, 2012 Common Core Aligned Lessons – NCTM Navigations Series, Grades K-2 First Grade CCSS Cluster/Standard Navigating Book Lesson Title and Page Number Student Behaviors (Mathematical Practices) to Look For… Add and subtract within 20. 1.OA.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). Navigating through Number and Operations in Prekindergarten Grade 2, 2004 Chapter 3: Flip Two Pages 65-67 Mathematical Practice focus is indicated in bold: 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. Work with addition and subtraction equations. 1.AO.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. Navigating through Algebra in PrekindergartenGrade 2, 2001 Chapter 2: Lots of Spots Pages 36-37 Mathematical Practice focus is indicated in bold: 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. 1.OA.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 = _. 5 DRAFT: North Carolina Department of Public Instruction, 2012 Represent and solve problems involving addition and subtraction. 1.OA.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.1 1 Chapter 2: How Far? Pages 50-52 Navigating through Algebra in PrekindergartenGrade 2, 2001 Chapter 3: Math Machines Pages 69-70 Navigating through Geometry in Prekindergarten – Grade 2 Chapter 4: Skeletons Pages 76-78 See Glossary, Table 1, in CCSS for Problem-Types. Represent and solve problems involving addition and subtraction. 1.OA.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.1 1 Navigating through Algebra in PrekindergartenGrade 2, 2001 See Glossary, Table 1, in CCSS for Problem-Types. Reason with shapes and their attributes. 1. Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus nondefining attributes (e.g., color, orientation, overall size) ; build and draw shapes to possess defining attributes. 2. Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.1 Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. 1 Students do not need to learn formal names such as “right rectangular prism.” 6 DRAFT: North Carolina Department of Public Instruction, 2012 Measure lengths indirectly and by iterating length units. 1.MD.1. Order three objects by length; compare the lengths of two objects indirectly by using a third object. Navigating through Measurement in Prekindergarten – Grade 2 Chapter 1: String Lengths Pages 18-20 Measure lengths indirectly and by iterating length units. 1.MD.2 Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps. Measure lengths indirectly and by iterating length units. 1.MD.2 Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps. Measure lengths indirectly and by iterating length units. 1.MD.2 Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps. Navigating through Measurement in Prekindergarten – Grade 2 Chapter 2: Giant Steps, Baby Steps Pages 32-33 Navigating through Measurement in Prekindergarten – Grade 2 Chapter 2: Snake Imprints Pages 37-40 Navigating through Measurement in Prekindergarten – Grade 2 Chapter 2: Snail Trails Pages 44-46 7 Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. DRAFT: North Carolina Department of Public Instruction, 2012 Represent and interpret data. 1.MD.4 Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: Build a Graph Pages 15-17 Represent and interpret data. 1.MD.4 Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: What’s Your Favorite? Pages 18-21 Represent and interpret data. 1.MD.4 Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: All About Shoes Pages 25-26 Represent and interpret data. 1.MD.4 Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: Chain It Pages 27-29 8 Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. Mathematical Practice focus is indicated in bold: 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. DRAFT: North Carolina Department of Public Instruction, 2012 Represent and interpret data. 1.MD.4 Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 2: Back and Forth Pages 44-49 9 Mathematical Practice focus is indicated in bold: 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. DRAFT: North Carolina Department of Public Instruction, 2012 Common Core Aligned Lessons – NCTM Navigations Series, Grades K-2 Second Grade Navigating Book Lesson Title and Page Number Student Behaviors (Mathematical Practices) to Look For… Understand place value. 2.NBT.1 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. Navigating through Number and Operations in Prekindergarten Grade 2, 2004 Chapter 1: Trading Up or Down Pages 23-25 Mathematical Practice focus is indicated in bold: 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. Understand place value. 2.NBT.4. Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons. Navigating through Number and Operations in Prekindergarten Grade 2, 2004 Chapter 1: All in Order Pages 29-32 Mathematical Practice focus is indicated in bold: 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. Reason with shapes and their attributes. 2.G.1 Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces.1 Identify triangles, quadrilaterals, pentagons, hexagons, and cubes. Navigating through Geometry in Prekindergarten – Grade 2 Chapter 1: Name That Block Pages 19-21 Mathematical Practice focus is indicated in bold: 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. CCSS Cluster/Standard 10 DRAFT: North Carolina Department of Public Instruction, 2012 Measure and estimate lengths in standard units. 2.MD.1 Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes. 2.MD.2 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. 2.MD.3 Estimate lengths using units of inches, feet, centimeters, and meters. 2.MD.4 Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit. Navigating through Measurement in Prekindergarten – Grade 2 Chapter 2: Which Unit Did I Use? Pages 59-61 Mathematical Practice focus is indicated in bold: 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. Represent and interpret data. 2.MD.10 Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple puttogether, take-apart, and compare problems1 using information presented in a bar graph. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: Families Pages 30-32 Mathematical Practice focus is indicated in bold: 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. Represent and interpret data. 2.MD.10 Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple puttogether, take-apart, and compare problems1 using information presented in a bar graph. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 1: Morley Most and Lutie Least Pages 36-40 Mathematical Practice focus is indicated in bold: 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. 11 DRAFT: North Carolina Department of Public Instruction, 2012 Represent and interpret data. 2.MD.10 Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple puttogether, take-apart, and compare problems1 using information presented in a bar graph. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 2: Mystery Graphs Pages 50-52 Mathematical Practice focus is indicated in bold: 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. Represent and interpret data. 2.MD.10 Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple puttogether, take-apart, and compare problems1 using information presented in a bar graph. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 2: Conducting a Survey Pages 53-54 Mathematical Practice focus is indicated in bold: 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. Represent and interpret data. 2.MD.10 Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple puttogether, take-apart, and compare problems1 using information presented in a bar graph. Navigating through Data Analysis and Probability in Prekindergarten – Grade 2 Chapter 2: What a Difference a Day Makes Pages 55-57 Mathematical Practice focus is indicated in bold: 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. 12 DRAFT: North Carolina Department of Public Instruction, 2012