Principles and Standards for School Mathematics
Overview: http://www.nctm.org/standards/content.aspx?id=26798
Math Standard: http://www.nctm.org/standards/content.aspx?id=4294967312
Math Standard: http://www.nctm.org/standards/content.aspx?id=4294967312
Number and Operations
Web: http://www.nctm.org/standards/content.aspx?id=7564
Understand numbers, ways of representing numbers, relationships among numbers, and number systems
Grades 6–8 Expectations: In grades 6–8 all students should–
Understand meanings of operations and how they relate to one another
Grades 6–8 Expectations: In grades 6–8 all students should–
Compute fluently and make reasonable estimates
Grades 6–8 Expectations: In grades 6–8 all students should–
Understand numbers, ways of representing numbers, relationships among numbers, and number systems
Grades 6–8 Expectations: In grades 6–8 all students should–
- work flexibly with fractions, decimals, and percents to solve problems;
- compare and order fractions, decimals, and percents efficiently and find their approximate locations on a number line;
- develop meaning for percents greater than 100 and less than 1;
- understand and use ratios and proportions to represent quantitative relationships;
- develop an understanding of large numbers and recognize and appropriately use exponential, scientific, and calculator notation;
- use factors, multiples, prime factorization, and relatively prime numbers to solve problems;
- develop meaning for integers and represent and compare quantities with them.
Understand meanings of operations and how they relate to one another
Grades 6–8 Expectations: In grades 6–8 all students should–
- understand the meaning and effects of arithmetic operations with fractions, decimals, and integers;
- use the associative and commutative properties of addition and multiplication and the distributive property of multiplication over addition to simplify computations with integers, fractions, and decimals;
- understand and use the inverse relationships of addition and subtraction, multiplication and division, and squaring and finding square roots to simplify computations and solve problems.
Compute fluently and make reasonable estimates
Grades 6–8 Expectations: In grades 6–8 all students should–
- select appropriate methods and tools for computing with fractions and decimals from among mental computation, estimation, calculators or computers, and paper and pencil, depending on the situation, and apply the selected methods;
- develop and analyze algorithms for computing with fractions, decimals, and integers and develop fluency in their use;
- develop and use strategies to estimate the results of rational-number computations and judge the reasonableness of the results;
- develop, analyze, and explain methods for solving problems involving proportions, such as scaling and finding equivalent ratios.
Algebra
Web: http://www.nctm.org/standards/content.aspx?id=312
Understand patterns, relations, and functions
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Use mathematical models to represent and understand quantitative relationships
Grades 6–8 Expectations: In grades 6–8 all students should–
Analyze change in various contexts
Grades 6–8 Expectations: In grades 6–8 all students should–
Understand patterns, relations, and functions
Grades 6–8 Expectations: In grades 6–8 all students should–
- represent, analyze, and generalize a variety of patterns with tables, graphs, words, and, when possible, symbolic rules;
- relate and compare different forms of representation for a relationship;
- identify functions as linear or nonlinear and contrast their properties from tables, graphs, or equations.
Grades 6–8 Expectations: In grades 6–8 all students should–
- develop an initial conceptual understanding of different uses of variables;
- explore relationships between symbolic expressions and graphs of lines, paying particular attention to the meaning of intercept and slope;
- use symbolic algebra to represent situations and to solve problems, especially those that involve linear relationships;
- recognize and generate equivalent forms for simple algebraic expressions and solve linear equation
Use mathematical models to represent and understand quantitative relationships
Grades 6–8 Expectations: In grades 6–8 all students should–
- model and solve contextualized problems using various representations, such as graphs, tables, and equations
Analyze change in various contexts
Grades 6–8 Expectations: In grades 6–8 all students should–
- use graphs to analyze the nature of changes in quantities in linear relationships
Geometry
Web: http://www.nctm.org/standards/content.aspx?id=314
Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships
Grades 6–8 Expectations: In grades 6–8 all students should–
- precisely describe, classify, and understand relationships among types of two- and three-dimensional objects using their defining properties;
- understand relationships among the angles, side lengths, perimeters, areas, and volumes of similar objects;
- create and critique inductive and deductive arguments concerning geometric ideas and relationships, such as congruence, similarity, and the Pythagorean relationship
Grades 6–8 Expectations: In grades 6–8 all students should–
- use coordinate geometry to represent and examine the properties of geometric shapes;
- use coordinate geometry to examine special geometric shapes, such as regular polygons or those with pairs of parallel or perpendicular sides
Grades 6–8 Expectations: In grades 6–8 all students should–
- describe sizes, positions, and orientations of shapes under informal transformations such as flips, turns, slides, and scaling;
- examine the congruence, similarity, and line or rotational symmetry of objects using transformations
Grades 6–8 Expectations: In grades 6–8 all students should–
- draw geometric objects with specified properties, such as side lengths or angle measures;
- use two-dimensional representations of three-dimensional objects to visualize and solve problems such as those involving surface area and volume;
- use visual tools such as networks to represent and solve problems;
- use geometric models to represent and explain numerical and algebraic relationships;
- recognize and apply geometric ideas and relationships in areas outside the mathematics classroom, such as art, science, and everyday life
Measurement
web: http://www.nctm.org/standards/content.aspx?id=316
Understand measurable attributes of objects and the units, systems, and processes of measurement
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Understand measurable attributes of objects and the units, systems, and processes of measurement
Grades 6–8 Expectations: In grades 6–8 all students should–
- understand both metric and customary systems of measurement;
- understand relationships among units and convert from one unit to another within the same system;
- understand, select, and use units of appropriate size and type to measure angles, perimeter, area, surface area, and volume
Grades 6–8 Expectations: In grades 6–8 all students should–
- use common benchmarks to select appropriate methods for estimating measurements;
- select and apply techniques and tools to accurately find length, area, volume, and angle measures to appropriate levels of precision;
- develop and use formulas to determine the circumference of circles and the area of triangles, parallelograms, trapezoids, and circles and develop strategies to find the area of more-complex shapes;
- develop strategies to determine the surface area and volume of selected prisms, pyramids, and cylinders;
- solve problems involving scale factors, using ratio and proportion;
- solve simple problems involving rates and derived measurements for such attributes as velocity and density
Data Analysis and Probability
Formulate questions that can be addressed with data and collect, organize, and display relevant data to answer them
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
Grades 6–8 Expectations: In grades 6–8 all students should–
- formulate questions, design studies, and collect data about a characteristic shared by two populations or different characteristics within one population;
- select, create, and use appropriate graphical representations of data, including histograms, box plots, and scatterplots
Grades 6–8 Expectations: In grades 6–8 all students should–
- find, use, and interpret measures of center and spread, including mean and interquartile range;
- discuss and understand the correspondence between data sets and their graphical representations, especially histograms, stem-and-leaf plots, box plots, and scatterplots
Grades 6–8 Expectations: In grades 6–8 all students should–
- use observations about differences between two or more samples to make conjectures about the populations from which the samples were taken;
- make conjectures about possible relationships between two characteristics of a sample on the basis of scatterplots of the data and approximate lines of fit;
- use conjectures to formulate new questions and plan new studies to answer them
Grades 6–8 Expectations: In grades 6–8 all students should–
- understand and use appropriate terminology to describe complementary and mutually exclusive events;
- use proportionality and a basic understanding of probability to make and test conjectures about the results of experiments and simulations;
- compute probabilities for simple compound events, using such methods as organized lists, tree diagrams, and area models
Process
Web: http://www.nctm.org/standards/content.aspx?id=322
Problem Solving
Instructional programs from prekindergarten through grade 12
should enable all students to--
Instructional programs from prekindergarten through grade 12 should enable
all students to--
Instructional programs from prekindergarten through grade 12 should enable
all students to--
Instructional programs from prekindergarten through grade 12 should enable
all students to--
Instructional programs from prekindergarten through grade 12 should enable
all students to--
Problem Solving
Instructional programs from prekindergarten through grade 12
should enable all students to--
- Build new mathematical knowledge through problem solving
- Solve problems that arise in mathematics and in other contexts
- Apply and adapt a variety of appropriate strategies to solve problems
- Monitor and reflect on the process of mathematical problem solving
Instructional programs from prekindergarten through grade 12 should enable
all students to--
- Recognize reasoning and proof as fundamental aspects of mathematics
- Make and investigate mathematical conjectures
- Develop and evaluate mathematical arguments and proofs
- Select and use various types of reasoning and methods of proof
Instructional programs from prekindergarten through grade 12 should enable
all students to--
- Organize and consolidate their mathematical thinking through communication
- Communicate their mathematical thinking coherently and clearly to peers, teachers, and others
- Analyze and evaluate the mathematical thinking and strategies of others;
- Use the language of mathematics to express mathematical ideas precisely.
Instructional programs from prekindergarten through grade 12 should enable
all students to--
- Recognize and use connections among mathematical ideas
- Understand how mathematical ideas interconnect and build on one another to produce a coherent whole
- Recognize and apply mathematics in contexts outside of mathematics
Instructional programs from prekindergarten through grade 12 should enable
all students to--
- Create and use representations to organize, record, and communicate mathematical ideas
- Select, apply, and translate among mathematical representations to solve problems
- Use representations to model and interpret physical, social, and mathematical phenomena