MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 Unit Description Unit: 4 Title: Rational Numbers (Ordering, Comparing & Graphing) Suggested Length: 4 weeks Big Idea(s) What enduring understandings are essential for application to new situations within or beyond this content? Enduring Understandings Develop fluency of operations of positive rational numbers and order of the full system of rational numbers. Enduring Skills Rubric measures competency of the following skills: Numbers The distance between any two consecutive counting numbers on a given number line is the same. Zero can be associated with a unique point on the number line. Integers are the whole numbers and their opposites on the number line, where zero is its own opposite. Each integer can be associated with a unique point on the number line, but there are many points on the number line. An integer and its opposite are the same distance from zero on the number line. There is no greatest or least integer on the number line. Each fraction can be associated with a unique point on the number line, but not all of the points between integers can be named by fractions. There are an infinite number of fractions between any two fractions on the number line. A decimal is another name for a fraction and thus can be associated with the corresponding point on the number line. Comparison A number to the right of another on the number line is the greater number. Integers can be compared using greater than, less than, or equal. Orientation & Location The Cartesian Coordinate System is a scheme that uses two perpendicular number lines intersection at 0 on each to name the location of points in the plane; the system can be extended to name points in space. Every point in the plane can be described uniquely by an ordered pair of numbers; the first number tells the distance to the left or right of zero on the horizontal number line; the second tells the distance above or below zero on the vertical number line. Curriculum and Instruction 2015-2016 Page 1 of 8 MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 Essential Question(s) • When are negative numbers used and why are they important? • Why is it useful for me to know the absolute value of a number? • When is graphing on the coordinate plane helpful? • How do I use positive and negative numbers in everyday life? • Where do I place positive and negative rational numbers on the number line? How do I use positive and negative numbers to represent quantities in realworld contexts? • What are opposites, and how are opposites shown on a number line? • How do statements of inequality help me place numbers on a number line? • How can I use coordinates to find the distances between points? • How can I use number lines to find the distances between points? • How can I use absolute value to find the lengths of the sides of polygons on the coordinate plane? What questions will provoke and sustain student engagement while focusing learning? • Standards Standards for Mathematical Practice 1. Make sense of problems and persevere in solving them. Students make sense of problems involving points and polygons in the coordinate plane. 2. Reason abstractly and quantitatively. Students demonstrate abstract reasoning about rational numbers with their visual representations. Students consider the values of these numbers in relation to distance (number lines). 3. Construct viable arguments and critique the reasoning of others. Students construct and critique arguments regarding number line representations and the use of inequalities to represent real-world contexts. 4. Model with mathematics. Students use number lines to compare numbers and represent inequalities in mathematical and real-world contexts. 5. Use appropriate tools strategically. Students select and use tools such as two-color counters, number line models and the coordinate plane to represent situations involving positive and negative numbers. 6. Attend to precision. Students attend to the language of real-world situations to determine if positive or negative quantities/distances are being represented. 7. Look for and make use of structure. Students relate the structure of number lines to values of rational numbers as they use the coordinate plane. 8. Look for and express regularity in repeated reasoning. Students relate new experiences to experiences with similar contexts when studying positive and negative representations of distance and quantity. In the study of absolute Curriculum and Instruction 2015-2016 Page 2 of 8 MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 value, students demonstrate repeated reasoning by showing that both positive and negative quantities represent the same distance from zero. Standards for Mathematical Content 6.NS.5 Understand that positive and negative numbers are used together to describe quantities having opposite directions or values (e.g., temperature above/below zero, elevation above/below sea level, credits/debits, positive/negative electric charge); use positive and negative numbers to represent quantities in real-world contexts, explaining the meaning of 0 in each situation. 6.NS.6 Understand a rational number as a point on the number line. Extend number line diagrams and coordinate axes familiar from previous grades to represent points on the line and in the plane with negative number coordinates. a. Recognize opposite signs of numbers as indicating locations on opposite sides of 0 on the number line; recognize that the opposite of the opposite of a number is the number itself, e.g., – (–3) = 3, and that 0 is its own opposite. b. Understand signs of numbers in ordered pairs as indicating locations in quadrants of the coordinate plane; recognize that when two ordered pairs differ only by signs, the locations of the points are related by reflections across one or both axes. c. Find and position integers and other rational numbers on a horizontal or vertical number line diagram; find and position pairs of integers and other rational numbers on a coordinate plane. 6.NS.7 Understand ordering and absolute value of rational numbers. a. Interpret statements of inequality as statements about the relative position of two numbers on a number line diagram. For example, interpret –3 > –7 as a statement that –3 is located to the right of –7 on a number line oriented from left to right. b. Write, interpret, and explain statements of order for rational numbers in real-world contexts. For example, write –3 oC > –7 oC to express the fact that –3 oC is warmer than –7 oC. c. Understand the absolute value of a rational number as its distance from 0 on the number line; interpret absolute value as magnitude for a positive or negative quantity in a real-world situation. For example, for an account balance of –30 dollars, Curriculum and Instruction 2015-2016 Page 3 of 8 MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 write |–30| = 30 to describe the size of the debt in dollars. d. Distinguish comparisons of absolute value from statements about order. For example, recognize that an account balance less than –30 dollars represents a debt greater than 30 dollars. Supporting Standard(s) Which related standards will be incorporated to support and enhance the enduring standards? 6.NS.8 Solve real-world and mathematical problems by graphing points in all four quadrants of the coordinate plane. Include use of coordinates and absolute value to find distances between points with the same first coordinate or the same second coordinate. 6.G.3 Draw polygons in the coordinate plane given coordinates for the vertices; use coordinates to find the length of a side joining points with the same first coordinate or the same second coordinate. Apply these techniques in the context of solving real-world and mathematical problems. 6.RP.3 Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations. a. Make tables of equivalent ratios relating quantities with whole number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane. Use tables to compare ratios. 5th grade Standards: 5.OA.3 Generate two numerical patterns using two given rules. Identify apparent relationships between corresponding terms. Form ordered pairs consisting of corresponding terms for two patterns, and graph the ordered pairs on a coordinate plane. 5.G.1 Use a pair of perpendicular number lines, called axes, to define a coordinate system, with the intersection of the lines (the origin) arranged to coincide with the 0 on each line and a given point in the plane located by using an ordered pair of numbers, called its coordinates. Understand that the first number indicates how far to travel from the origin in the direction of one axis, and the second number indicates how far to travel in the direction of the second axis, with the convention that the names of the two axes and the coordinates correspond (e.g., x-axis and x-coordinate, y-axis and ycoordinate). 5.G.2 Represent real world and mathematical problems by graphing points in the first quadrant of the coordinate plane, and interpret coordinate values of points in the context of the situation. Curriculum and Instruction 2015-2016 Page 4 of 8 MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 Instructional Outcomes What must students learn and be able to do by the end of the unit? I am learning to…. Curriculum and Instruction Identify an integer and its opposite. Use integers to represent quantities in real world situations (above/below sea level, temperatures above/below zero, credits/debits etc). Explain where zero fits into a situation represented by integers (sea level, no debt, etc). Identify a rational number as a point on the number line. Identify the location of zero on a number line in relation to positive and negative numbers. Recognize opposite signs of numbers as locations on opposite sides of 0 on the number line. Determine which quadrant an ordered pair is located based on the signs of the x and y coordinates. Find and plot integers and other rational numbers on a horizontal or vertical number line diagram. Find and plot pairs of integers and other rational numbers on a coordinate plane. Reason that the opposite of the opposite of a number is the number itself (e.g., the opposite of 3 is -3, so the opposite of -3 is 3). Reason that when only the x value in a set of ordered pairs are opposites, it creates a reflection over the y axis. Recognize that when only the y value in a set of ordered pairs are opposites, it creates a reflection over the x axis. Reason that when two ordered pairs differ only by signs, the locations of the points are related by reflections across both axes. Order rational numbers on a number line. Identify absolute value of rational numbers. Interpret statements of inequality as statements about relative position of two numbers on a number line diagram. (Ex. -4 is less than -2 because it is farther to the left on a number line) Write, interpret, and explain statements of order for rational numbers in real-world contexts. Describe a number’s absolute value as its distance from zero on a number line. Represent magnitude using absolute value (ex., -$30 means I owe $30). Distinguish comparisons of absolute value from statements about order and apply to real world contexts. Calculate absolute value. Graph points in all four quadrants of the coordinate plane. Given only coordinates, calculate the distances between two points 2015-2016 Page 5 of 8 MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 Essential Vocabulary What vocabulary must students know to understand and communicate effectively about this content? Resources/Activities What resources could we use to best teach this unit? with the same first coordinate or the same second coordinate using absolute value. Draw polygons in the coordinate plane. Use coordinates to find the length of a side of a polygon. Essential Vocabulary Absolute Value Axis (plural – axes) Coordinate Grid Coordinate Pair Coordinate Plane Coordinate System Coordinates Inequality Integer Ordered pair Origin Polygon Quadrants Vertex (Vertices) x-axis x-coordinate y-axis y-coordinate Supporting Vocabulary Greater than Less than Number line Resources/Activities https://www.georgiastandards.org/CommonCore/Common%20Core%20Frameworks/CCGPS_Math_6_6thGrade_Unit7.pdf The following website is a website with lessons to address CCSS: https://www.engageny.org/resource/grade-6-mathematics Khan Academy – www.khanacademy.org Curriculum and Instruction 2015-2016 Page 6 of 8 MADISON COUNTY PUBLIC SCHOOLS District Curriculum Map for Mathematics: Grade 6 IXL – www.ixl.com http://www.insidemathematics.org/common-core-resources/mathematicalcontent-standards/standards-by-grade/6th-grade http://www.mathchimp.com/6th-grade-math-resources Remember there are other sources in your school that may not be listed on this resources list due to variation in each individual school. If you have a good resource that you would be willing to share, please let Mendy Mills know so that she can share with other math teachers. Please include the unit number for the resource. Mendy.Mills@madison.kyschools.us Curriculum and Instruction 2015-2016 Page 7 of 8 Curriculum and Instruction 2015-2016 Page 8 of 8