| A. MATHEMATICAL PROCESSES Content
Standard: Students in Wisconsin will draw on a broad body of
mathematical knowledge and apply a variety of mathematical skills and strategies,
including reasoning, oral and written communication, and the use of appropriate
technology, when solving mathematical, real-world* and nonroutine* problems.
PERFORMANCE STANDARDS: By the end of grade 8 students will:
A.8.1 Use reasoning abilities to
evaluate information
perceive patterns
identify relationships
formulate questions for further exploration
evaluate strategies
justify statements
test reasonableness of results
defend work
A.8.2 Communicate logical arguments clearly to show why a result
makes sense
A.8.3 Analyze nonroutine* problems by modeling*, illustrating, guessing,
simplifying, generalizing, shifting to another point of view, etc.
A.8.4 Develop effective oral and written presentations that include
appropriate use of technology
the conventions of mathematical discourse (e.g., symbols, definitions, labeled
drawings)
mathematical language
clear organization of ideas and procedures
understanding of purpose and audience
A.8.5 Explain mathematical concepts, procedures, and ideas to
others who may not be familiar with them
A.8.6 Read and understand mathematical texts and other instructional materials
and recognize mathematical ideas as they appear in other contexts
B. NUMBER OPERATIONS AND RELATIONSHIPS
Content Standard
Students in Wisconsin will use numbers effectively for various
purposes, such as counting, measuring, estimating, and problem solving.
PERFORMANCE STANDARDS: By the end of grade 8 students will:
B.8.1 Read, represent, and interpret various rational numbers* (whole numbers*,
integers*, decimals, fractions, and percents) with verbal descriptions, geometric models*,
and mathematical notation (e.g., expanded*, scientific*, exponential*)
B.8.2 Perform and explain operations on rational* numbers (add, subtract, multiply,
divide, raise to a power, extract a root, take opposites and reciprocals, determine
absolute value)
B.8.3 Generate and explain equivalencies among fractions, decimals, and percents
B.8.4 Express order relationships among rational numbers using appropriate symbols
(>, <, ³ , £ , ¹ )
B.8.5 Apply proportional thinking in a variety of problem situations that include, but
are not limited to
ratios and proportions (e.g., rates, scale drawings*,
similarity*)
percents, including those greater than 100 and less than one (e.g., discounts, rate
of increase or decrease, sales tax)
B.8.6 Model* and solve problems involving number-theory concepts such as
prime* and composite numbers
divisibility and remainders
greatest common factors
least common multiples
B.8.7 In problem-solving situations, select and use appropriate
computational procedures with rational numbers such as
calculating mentally
estimating
creating, using, and explaining algorithms* using technology (e.g., scientific
calculators, spreadsheets)
C. GEOMETRY
Content Standard: Students in Wisconsin will be
able to use geometric concepts, relationships and procedures to interpret, represent, and
solve problems.
Note: Familiar mathematical content dealing with measurement of
geometric objects (e.g., length, area, volume) is presented in "D. Measurement."
PERFORMANCE STANDARDS: By the end of grade 8 students will:
C.8.1 Describe special and complex two- and three-dimensional figures
(e.g., rhombus, polyhedron, cylinder) and their component parts (e.g., base, altitude, and
slant height) by
naming, defining, and giving examples
comparing, sorting, and classifying them
identifying and contrasting their properties (e.g., symmetrical*, isosceles,
regular)
drawing and constructing physical models to specifications
explaining how these figures are related to objects in the environment
C.8.2 Identify and use relationships among the component parts
of special and complex two- and three-dimensional figures (e.g., parallel sides,
congruent* faces)
C.8.3 Identify three-dimensional shapes from two-dimensional perspectives and
draw two-dimensional sketches of three-dimensional objects preserving their significant
features
C.8.4 Perform transformations* on two-dimensional figures and describe and
analyze the effects of the transformations on the figures
C.8.5 Locate objects using the rectangular coordinate system*
D. MEASUREMENT
Content Standard: Students in Wisconsin will
select and use appropriate tools (including technology) and techniques to measure things
to a specified degree of accuracy. They will use measurements in problem-solving
situations.
PERFORMANCE STANDARDS: By the end of grade 8 students will:
D.8.1 Identify and describe attributes* in situations where they are not
directly* or easily measurable (e.g., distance, area of an irregular figure, likelihood of
occurrence)
D.8.2 Demonstrate understanding of basic measurement facts, principles, and
techniques including the following
approximate comparisons between metric and US Customary units
(e.g., a liter and a quart are about the same; a kilometer is about six-tenths of a mile)
knowledge that direct measurement* produces approximate, not exact, measures
the use of smaller units to produce more precise measures
D.8.3 Determine measurement directly* using standard units
(metric and US Customary) with these suggested degrees of accuracy
lengths to the nearest mm or 1/16 of an inch
weight (mass) to the nearest 0.1 g or 0.5 ounce
liquid capacity to the nearest millileter
angles to the nearest degree
temperature to the nearest C° or F°
elapsed time to the nearest second
D.8.4 Determine measurements indirectly* using
estimation
conversion of units within a system (e.g., quarts to cups, millimeters to
centimeters)
ratio and proportion (e.g., similarity*, scale drawings*)
geometric formulas to derive lengths, areas, volumes of common figures (e.g.,
perimeter, circumference, surface area)
the Pythagorean* relationship
geometric relationships and properties for angle size (e.g., parallel lines and
transversals; sum of angles of a triangle; vertical angles*)
E. STATISTICS AND PROBABILITY
Content Standard: Students in Wisconsin will
use data collection and analysis, statistics and probability in problem-solving
situations, employing technology where appropriate.
PERFORMANCE STANDARDS: By the end of grade 8 students will:
E.8.1 Work with data in the context of real-world situations by
formulating questions that lead to data collection and
analysis
designing and conducting a statistical investigation
using technology to generate displays, summary statistics*, and presentations
E.8.2 Organize and display data from statistical investigations using
appropriate tables, graphs, and/or charts (e.g., circle, bar,
or line for multiple sets of data)
appropriate plots (e.g., line*, stem-and-leaf*, box*, scatter*)
E.8.3 Extract, interpret, and analyze information from organized and
displayed data by using
frequency and distribution, including mode* and range*
central tendencies* of data (mean* and median*)
indicators of dispersion (e.g., outliers*)
E.8.4 Use the results of data analysis to
make predictions
develop convincing arguments
draw conclusions
E.8.5 Compare several sets of data to generate, test, and, as the data
dictate, confirm or deny hypotheses
E.8.6 Evaluate presentations and statistical analyses from a variety of sources for
credibility of the source
techniques of collection, organization, and presentation of data
missing or incorrect data
inferences
possible sources of bias
E.8.7 Determine the likelihood of occurrence of simple events by
using a variety of strategies to identify possible outcomes
(e.g., lists, tables, tree diagrams*)
conducting an experiment
designing and conducting simulations*
applying theoretical notions of probability (e.g., that four equally likely events
have a 25 percent chance of happening)
F. ALGEBRAIC RELATIONSHIPS
Content Standard: Students in Wisconsin will
discover, describe, and generalize simple and complex patterns and relationships. In the
context of real-world problem situations, the student will use algebraic techniques to
define and describe the problem to determine and justify appropriate solutions.
PERFORMANCE STANDARDS: By the end of grade 8 students will:
F.8.1 Work with algebraic expressions in a variety of ways, including
using appropriate symbolism, including exponents* and variables*
evaluating expressions through numerical substitution
generating equivalent expressions
adding and subtracting expressions
F.8.2 Work with linear and nonlinear patterns* and relationships
in a variety of ways, including
representing them with tables, with graphs, and with algebraic
expressions, equations, and inequalities
describing and interpreting their graphical representations (e.g., slope*, rate of
change, intercepts*)
using them as models of real-world phenomena
describing a real-world phenomenon that a given graph might represent
F.8.3 Recognize, describe, and analyze functional relationships*
by generalizing a rule that characterizes the pattern of change among variables. These
functional relationships include exponential growth and decay (e.g., cell division,
depreciation)
F.8.4 Use linear equations and inequalities in a variety of ways, including
writing them to represent problem situations and to express
generalizations
solving them by different methods (e.g., informally, graphically, with formal
properties, with technology)
writing and evaluating formulas (including solving for a specified variable)
using them to record and describe solution strategies
F.8.5 Recognize and use generalized properties and relations,
including
additive and multiplicative property of equations and
inequalities
commutativity* and associativity* of addition and multiplication
distributive* property
inverses* and identities* for addition and multiplication
transitive* property
Standards prepared by Wisconsin Department of Public Instruction |