Grade 7 Unit 1 Table of Contents Integers and Rational Numbers Section Page Number Unit Description Unit Standards Unit Essential Questions Unit Proficiencies (Learning Targets) Unit Vocabulary Sample Unit Calendar and Possible Supporting Materials Student Proficiencies Handout Unit Assessments and Rubric/Commentary 1|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) Unit Title: Stage 1 Unit Description: Standards: Grade 7 Content Unit 1 Integers and rational numbers Identify Desired Results Dates of Unit: Students will solve real-world and mathematical problems involving the four operations with rational numbers. They will learn to add, subtract, multiply, and divide with integers and extend that knowledge to include rational numbers . 7.NS.1 Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram. a. Describe situations in which opposite quantities combine to make 0. For example, a hydrogen atom has 0 charge because its two constituents are oppositely charged. b. Understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative. Show that a number and its opposite have a sum of 0 (are additive inverses). Interpret sums of rational numbers by describing realworld contexts. c. Understand subtraction of rational numbers as adding the additive inverse, p – q = p + (–q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts. d. Apply properties of operations as strategies to add and subtract rational numbers. 7.NS.2 Apply and extend previous understandings of multiplication and division and of fractions to multiply and divide rational numbers. a. Understand that multiplication is extended from fractions to rational numbers by requiring that operations continue to satisfy the properties of operations, particularly the distributive property, leading to products such as (–1)(–1) = 1 and the rules for multiplying signed numbers. Interpret products of rational numbers by describing real-world contexts. b. Understand that integers can be divided, provided that the divisor is not zero, and every quotient of integers (with non-zero divisor) is a rational number. If p and q are integers, then –(p/q) = (–p)/q = p/(–q). Interpret quotients of rational numbers by describing real-world contexts. c. Apply properties of operations as strategies to multiply and divide rational numbers. d. Convert a rational number to a decimal using long division; know that the decimal form of a rational number terminates in 0s or eventually repeats 2|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) 7.NS.3 Solve real-world and mathematical problems involving the four operations with rational numbers. (Computations with rational numbers extend the rules for manipulating fractions to complex fractions.) 7.EE.3 Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations as strategies to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies. For example: If a woman making $25 an hour gets a 10% raise, she will make an additional 1/10 of her salary an hour, or $2.50, for a new salary of $27.50. If you want to place a towel bar 9 3/4 inches long in the center of a door that is 27 1/2 inches wide, you will need to place the bar about 9 inches from each edge; this estimate can be used as a check on the exact computation. Essential Questions: Standard Proficiencies 1. How is an understanding of positive and negative rational numbers useful in problem solving? 2. How does the ability to use multiple methods and tools to compute fluently—and make reasonable estimates—help to simplify mathematical tasks involving integers and rational numbers? 7.NS.1 7.NS.2 7.NS.3 7.EE.3 I can describe situations in which opposite quantities combine to make zero. (Learning Targets) a) I can demonstrate and explain how the sum of q + p will be the absolute value of q units in the negative or positive direction of p, depending on the sign of q. b) I can demonstrate and explain how the distance between two rational numbers is the absolute value of their difference. c) I can demonstrate and explain how subtraction of rational numbers is the same as adding the additive inverse. d) I can use properties of operations to add and subtract rational numbers. I can use the properties of operations, including distributive property, to multiply rational numbers. a) I can describe and model real life situations for multiplying and dividing rational numbers. I can solve problems involving adding, subtracting, multiplying and dividing rational numbers including complex fractions. I can solve multi-step real-life problems posed with positive and negative rational numbers in any form. I can use properties of operations to calculate with numbers in any form and determine if my answers are reasonable. b) I can explain why integers can be divided, except when the divisor is zero. c) I can describe why the quotient is always rational, and why –(p/q) = (–p)/q= p/(–q). d) I know and can describe the rules for multiplying and dividing integers (signed numbers). I can describe and model real life situations for adding and subtracting rational numbers. I can use properties of operations to multiply and 3|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) divide rational numbers. I can use long division to convert a rational number to a decimal. I can explain how the decimal form of a rational number either terminates or repeats. 4|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) Stage 2 Determine Assessment Evidence Academic Language (What language will students need to sound like experts?) Academic Vocabulary: -additive inverse -equation -equivalent ratio -expression -formula -divisor -absolute value -negative -integer -quotient -product -positive -fraction -inequality -rational number 5|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) Unit of Study Assessment Checklist Stage 3 Plan Learning Experiences and Instruction Pacing Calendar Proficiency Materials Time Allotment 6|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) INTEGERS & RATIONAL NUMBERS PROFICIENCIES Name ______________________________ Date ________________________ Period _____ My Proficiency Assessment Scores Proficiency #1 – “I can use properties of operations to add and subtract rational numbers. Proficiency #2 – “I can demonstrate and explain how the sum of q + p will be the absolute value of q units in the negative or positive direction of p, depending on the sign of q.” Proficiency #3 – “I can demonstrate and explain how the distance between two rational numbers is the absolute value of their difference. Proficiency #4 – “I can demonstrate and explain how subtraction of rational numbers is the same as adding the additive inverse. Proficiency #5 – “I can use properties of operations to add and subtract rational numbers. Proficiency #6 – “I can describe and model real life situations for adding and subtracting rational numbers. Proficiency #7 – “I can use the properties of operations, including distributive property, to multiply rational numbers.” . Proficiency #8 – “I can describe and model real life situations for multiplying and dividing rational numbers. Proficiency #9 – “I can explain why integers can be divided, except when the divisor is zero. 7|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) Proficiency #10 – “I can use positive and negative numbers to describe real life situations .” Proficiency #11 – “I can explain the meaning of zero in real life situations.” Proficiency #12 – “I can find the mean of a set of numbers.” Proficiency #13 – “I can find the median of a set of numbers .” Proficiency #14 – “I can find the mode of a set of numbers .” Proficiency #15 – “I can find the range of a numbers .” Proficiency #16 – “I can understand and use mathematical vocabulary .” additive inverse equation equivalent ratio expression formula divisor absolute value negative integer quotient product positive fraction inequality rational number 8|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) Proficiency Assessment… Name _________________________________ Date _______________________ Period ____ Proficiency # – “I can ….” 9|Page This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014) Proficiency Score 4 Percentage 3 83% 2 67% 1 50% 100% Description WOW! I have shown proficiency and deeper understanding by: You got it I have shown proficiency by: Help is needed I have shown partial understanding by: Uh-oh… I have not yet shown my understanding of the math. 10 | P a g e This Unit Developed by: Althea Beam, Robert Shearer, and Brad Agenbroad (June, 2014)