6.2.1 Add and subtract positive and negative integers.

6.2.2 Multiply and divide positive and negative integers.

6.2.5 Solve problems involving addition, subtraction, multiplication, and
division of positive fractions and explain why a particular operation was
used for a given situation.

6.2.6 Interpret and use ratios to show the relative sizes of two quantities.
Use the notations: a/b, a to b, a:b.

Algebra and Functions

6.3.1 Write and solve one-step linear equations and inequalities in one variable
and check the answers.

6.3.2 Write and use formulas with up to three variables to solve problems.

6.3.3 Interpret and evaluate mathematical expressions that use grouping symbols
such as parentheses.

6.3.4 Use parentheses to indicate which operation to perform first when writing
expressions containing more than two terms and different operations.

6.3.6 Apply the correct order of operations and the properties of real numbers
(e.g., identity, inverse, commutative, associative, and distributive properties)
to evaluate numerical expressions. Justify each step in the process.

6.3.9 Investigate how a change in one variable relates to a change in a second
variable.

6.5.1 Select and apply appropriate standard units and tools to measure length, area, volume, weight, time, temperature, and the size of angles.

**Grade 6 Analysis and Probability**

6.6.1 Organize and display single-variable data in appropriate graphs and
stem-and-leaf plots, and explain which types of graphs are appropriate for
various data sets.

6.6.3 Compare the mean, median, and mode for a set of data and explain which
measure is most appropriate in a given context.

6.6.4 Show all possible outcomes for compound events in an organized way and
find the theoretical probability of each outcome.

6.7.1 Analyze problems by identifying relationships, telling relevant from
irrelevant information, identifying missing information, sequencing and prioritizing
information, and observing patterns.

6.7.2 Make and justify mathematical conjectures based on a general description
of a mathematical question or problem.

6.7.3 Decide when and how to break a problem into simpler parts.

6.7.4 Apply strategies and results from simpler problems to solve more complex
problems.

6.7.5 Express solutions clearly and logically by using the appropriate mathematical
terms and notation. Support solutions with evidence in both verbal and symbolic
work.

6.7.6 Recognize the relative advantages of exact and approximate solutions
to problems and give answers to a specified degree of accuracy.

6.7.7 Select and apply appropriate methods for estimating results of rational-number
computations.

6.7.8 Use graphing to estimate solutions and check the estimates with analytic
approaches.

6.7.9 Make precise calculations and check the validity of the results in the
context of the problem.

6.7.10 Decide whether a solution is reasonable in the context of the original
situation.

6.7.11 Note the method of finding the solution and show a conceptual understanding
of the method by solving similar problems.

7.2.1 Solve addition, subtraction, multiplication, and division problems
that use integers, fractions, decimals, and combinations of the four operations.

Algebra and Functions

7.3.1 Use variables and appropriate operations to write an expression, a formula,
an equation, or an inequality that represents a verbal description.

7.3.2 Write and solve two-step linear equations and inequalities in one variable
and check the answers.

7.3.3 Use correct algebraic terminology, such as variable, equation, term,
coefficient, inequality, expression, and constant.

7.3.4 Evaluate numerical expressions and simplify algebraic expressions by
applying the correct order of operations and the properties of rational numbers
(e.g., identity, inverse, commutative, associative, distributive). Justify
each step in the process.

7.3.5 Solve an equation or formula with two variables for a particular variable.

7.5.1 Compare lengths, areas, volumes, weights, capacities, times, and temperatures
within measurement systems.

Data Analysis and Probability

7.6.1 Analyze, interpret, and display data in appropriate bar, line, and circle
graphs and stem-and-leaf plots and justify the choice of display.

7.6.2 Make predictions from statistical data.

7.6.3 Describe how additional data, particularly outliers, added to a data
set may affect the mean, median, and mode.

7.6.4 Analyze data displays, including ways that they can be misleading. Analyze
ways in which the wording of questions can influence survey results.

7.6.7 Find the number of possible arrangements of several objects using a
tree diagram.

7.7.1 Analyze problems by identifying relationships, telling relevant from
irrelevant information, identifying missing information, sequencing and prioritizing
information, and observing patterns.

7.7.2 Make and justify mathematical conjectures based on a general description
of a mathematical question or problem.

7.7.3 Decide when and how to divide a problem into simpler parts.

7.7.4 Apply strategies and results from simpler problems to solve more complex
problems.

7.7.5 Make and test conjectures by using inductive reasoning.

7.7.6 Express solutions clearly and logically by using the appropriate mathematical
terms and notation. Support solutions with evidence in both verbal and symbolic
work.

7.7.7 Recognize the relative advantages of exact and approximate solutions
to problems and give answers to a specified degree of accuracy.

7.7.8 Select and apply appropriate methods for estimating results of rational-number
computations.

7.7.9 Use graphing to estimate solutions and check the estimates with analytic
approaches.

7.7.10 Make precise calculations and check the validity of the results in
the context of the problem.

7.7.11 Decide whether a solution is reasonable in the context of the original
situation.

7.7.12 Note the method of finding the solution and show a conceptual understanding
of the method by solving similar problems.

8.2.1 Add, subtract, multiply, and divide rational numbers (integers, fractions,
and terminating decimals) in multi-step problems.

8.2.3 Use estimation techniques to decide whether answers to computations
on a calculator are reasonable.

Algebra and Functions

8.3.1 Write and solve linear equations and inequalities in one variable, interpret
the solution or solutions in their context, and verify the reasonableness
of the results.

8.3.2 Solve systems of two linear equations using the substitution method
and identify approximate solutions graphically.

8.3.4 Use the correct order of operations to find the values of algebraic
expressions involving powers.

8.3.8 Demonstrate an understanding of the relationships among tables, equations,
verbal expressions, and graphs of linear functions.

8.3.9 Represent simple quadratic functions using verbal descriptions, tables,
graphs, and formulas and translate among these representations.

**Grade 8 Data Analysis and Probability**

8.6.1 Identify claims based on statistical data and, in simple cases, evaluate
the reasonableness of the claims. Design a study to investigate the claim.

8.6.3 Understand the meaning of, and be able to identify or compute the minimum
value, the lower quartile, the median, the upper quartile, the interquartile
range, and the maximum value of a data set.

8.6.5 Represent two-variable data with a scatterplot on the coordinate plane
and describe how the data points are distributed. If the pattern appears to
be linear, draw a line that appears to best fit the data and write the equation
of that line.

8.6.7 Find the number of possible arrangements of several objects by using
the Basic Counting Principle.

8.7.1 Analyze problems by identifying relationships, telling relevant from
irrelevant information, identifying missing information, sequencing and prioritizing
information, and observing patterns.

8.7.2 Make and justify mathematical conjectures based on a general description
of a mathematical question or problem.

8.7.3 Decide when and how to divide a problem into simpler parts.

8.7.4 Apply strategies and results from simpler problems to solve more complex
problems.

8.7.5 Make and test conjectures using inductive reasoning.

8.7.6 Express solutions clearly and logically by using the appropriate mathematical
terms and notation. Support solutions with evidence in both verbal and symbolic
work.

8.7.7 Recognize the relative advantages of exact and approximate solutions
to problems and give answers to a specified degree of accuracy.

8.7.8 Select and apply appropriate methods for estimating results of rational-number
computations.

8.7.9 Use graphing to estimate solutions and check the estimates with analytic
approaches.

8.7.10 Make precise calculations and check the validity of the results in
the context of the problem.

8.7.11 Decide whether a solution is reasonable in the context of the original
situation.

8.7.12 Note the method of finding the solution and show a conceptual understanding
of the method by solving similar problems.

## Lawnmower Standards |