worksheet solving addition and subtraction equations

WORKSHEET SOLVING ADDITION AND SUBTRACTION EQUATIONS

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Goals	Application to this Lesson
Mathematics State Goal 6: Demonstrate and apply a knowledge and sense of numbers, including numeration and operations (addition, subtraction, multiplication, division), patterns, ratios and proportions. A. Demonstrate knowledge and use of numbers and their representations in a broad range of theoretical and practical settings. 6.A.2 Compare and order whole numbers, fractions and decimals, using concrete materials, drawings and mathematical symbols.	6.A.2 - Levers (Motorized Windshield Wiper) Worksheet 7 - Students will count the number of times the wipers come together inone minute. 6.A.2 - Wheels & Axles (Worksheet 14); Pulleys (Worksheet 25) - Students will count number of LEGO elements moved in one minute. 6.A.2 - Gears (Worksheet 19) Students will count number of times merry-go-round turned in one minute. 6.A.2 - Pulleys (Worksheet 24, 26) - Students will count number of times handle must turn.
B. Investigate, represent and solve problems using number facts, operations (addition, subtraction, multiplication, division) and their properties, algorithms and relationships. 6.B.2 Solve one- and two- step problems involving whole numbers,fractions and decimals using addition, subtraction, multiplication and division.
C. Compute and estimate using mental mathematics,paper-and-pencil methods, calculators and computers. 6.C.2a Select and perform computational procedures to solve problems with whole numbers, fractions and decimals. 6.C.2b Show evidence that computational results using whole numbers, fractions and decimals are correct and/or that estimates are reasonable.	6.C.2a - Average Speed - Students will calculate average speed. 6.C.3b - Levers (Motorized Windshield Wiper) Worksheet 7 - Students will predict the number of times the wipers come together inone minute. 6.C.3b - Wheels & Axles (Worksheet 14) ; Pulleys (Worksheet 25) - Students will predict number of LEGO elements moved in one minute. 6.C.3b -Gears (Worksheet 19) Students will predict number of times merry-go-round turned in one minute. 6.C.3b - Pulleys (Worksheet 24,) - Students will predict number of times handle must turn.
D. Solve problems using comparisons of quantities,ratios, proportions and percents. 6.D.2 Describe the relationship between two sets of data using ratios and appropriate notations (e.g., a/b, a to b, a:b)	6.D.2 - Gears (Worksheet 18, 20, 21, 22) - Students will calculate gear ratio. 6.D.2 - Pulleys (Worksheet 24, 25, 26) - Students will calculate pulley ratio.
Mathematics State Goal 7: Estimate, make and use measurements of objects, quantities andrelationships and determine acceptable levels of accuracy. A. Measure and compare quantities using appropriate units,instruments and methods. 7.A.2a Calculate, compare and convert length, perimeter, area,weight/mass and volume within the customary and metric systems. 7.A.2b Solve addition, subtraction, multiplication and division problems using currency.	7.A.2a - Investigating Wheels and Axles Worksheet 11, 15, 16 - Students will measure how far vehicle travelled.
B. Estimate measurements and determine acceptable levelsof accuracy. 7.B.2a Determine and communicate possible methods for estimating a given measure, selecting proper units in both customary and metric systems. 7.B.2b Estimate conversions between measures within the customary and metric systems.
C. Select and use appropriate technology, instruments and formulas to solve problems, interpret results and communicate findings 7.C.2a Describe relationships in a simple scale drawing. 7.C.2b Construct or draw figures with given perimeters and areas.
Mathematics State Goal 8: Use algebraic and analytical methods to identify and describe patterns and relationships in data, solve problems and predict results. A. Describe numerical relationships using variables and patterns. 8.A.2a Identify , describe, extend and create geometric and numeric patterns. 8.A.2b Construct and solve number sentences using a variable torepresent an unknown quantity.
B. Interpret and describe numerical relationships using tables, graphs, and symbols. 8.B.2 Analyze a geometric pattern and express the results numerically
C. Select and use appropriate technology, instruments and formulas to solve problems, interpret results and communicate findings 8.C.2 Explain operations and number properties including commutative, associative, distributive, transitive, zero, equality and order of operations
D. Select and use appropriate technology, instruments and formulas to solve problems, interpret results and communicate findings 8.D.2 Solve linear equations involving whole numbers.	8.D.2 - Gears, Pulleys.
Mathematics State Goal 9: Use geometric methods to analyze, categorize, and draw conclusions aboutpoints, lines, planes and space. A. Demonstrate and apply geometric concepts involving points, lines,planes and space. 9.A.2a Build physical models of two- and three-dimensional shapes. 9.A.2b Identify and describe how geometric figures are used in practicalsettings (e.g., construction, art, advertising). 9.A.2c Describe and draw representations of geometric relationships,patterns, symmetries, and designs in two- and three-dimensions with andwithout technology.
B. Identify, describe, classify and compare relationships usingpoints, lines, planes and solids. 9.B.2 Compare geometric figures and determine their properties,including parallel, perpendicular, similar, congruent and line symmetry.
C. Construct convincing arguments and proofs to solve problems. 9.C.2 Formulate logical arguments about geometric figures and patterns and communicate reasoning.
Mathematics State Goal 10: Collect, organize and analyze data using statistical methods; predictresults; and interpret uncertainty using concepts of probability. A. Organize, describe and make predictions from existing data. 10.A.2a Organize and display data using pictures, tallies, tables,charts, bar graphs, line graphs, line plots and stem-and-leaf graphs. 10.A.2b Using a data set, determine mean, median, mode and range, withand without the use of technology. 10.A.2c Make predictions and decisions based on data and communicate theirreasoning.
B. Formulate questions, design data collection methods, gather andanalyze data, and communicate findings. 10.B.2a Formulate questions of interest and select methods tosystematically collect data. 10.B.2b Collect, organize and display data using tables, charts, bargraphs, line graphs, circle graphs, line plots and stem-and-leaf graphs. 10.B.2c Analyze the data using mean, median, mode and range, asappropriate, with or without the use of technology. 10.B.2d Interpret results or make relevant decisions based on the datagathered.
C. Determine, describe and apply the probabilities of events. 10.C.2a Calculate the probability of a simple event. 10.C.2b Compare the likelihood of events in terms of certain, morelikely, less likely or impossible. 10.C.2c Determine the probability of an event involving "and","or" or "not"	10.C.2b - Pulleys, Gears, Levers.