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This resource explains the Common Core Math Standards for grades K12 in Illinois. This resource first explains the overal desired Mathematical Practices for students in all grades. As you scroll down, you will find the discreet standards for each grade level.
The Teaching with Curriculum Focal Points series consists of gradelevel publications designed to support tutors as they begin the discussion of a more focused math curriculum.
Elementary Math Videos
 Grade 3
 Grade 5
Middle School Math Videos

 Dividing Fractions
 Solving a Percent Problem
 Making Sense of Models
 Connecting Representations of Functions
 Finding Area in Context
 Interpreting TwoWay Frequency Tables
 Multiplying Fractions
 Using a Table to Reason Proportionally
 Exploring Different Ways That Lines Can Intersect
 Interpreting Graphs to Create Context
 Visualizing Rotations
 Determining the Appropriate Measure of Center
Addition and Subtraction

 Direct Modeling strategy for a Join (Change Unknown) problem
 Direct Modeling strategy for a Separate (Result Unknown) problem
 Direct Modeling strategy for a Separate (Result Unknown) problem, in which a teacher responds to a miscount
 Direct Modeling strategy for a Separate (Result Unknown) problem, in which a teacher responds to a miscount
 Direct Modeling strategy for a Compare (Difference Unknown) problem
 Direct Modeling strategy for a Compare (Difference Unknown) problem
 Direct Modeling strategy for a Join (Start Unknown) problem
 A child who has directly modeled for other problems is given a Join (Start Unknown) problem
 Count On from Larger strategy for addition
 Count On from Larger strategy for a join (Result Unknown) problem
 Count On from Larger strategy for a join (Result Unknown) problem
 Counting strategy for a join (Change Unknown) problem
 Counting strategy for subtraction
 Counting strategy for a Separate (Result Unknown), in Spanish
 Counting strategy for a Join (Change Unknown) problem, with written notation
 Derived Fact strategy based on doubles
 Derived Fact strategy based on doubles
 Derived Fact strategy using ten as a benchmark
 Derived Fact strategy for subtraction using ten as a benchmark
 Gilberto uses strategies for adding and subtracting, using ten as a benchmark
 Karen uses a variety of Number Fact strategies for adding and subtracting
 Aaliyah solves a Join (Result Unknown) problem
 Aaliyah solves a join (Change Unknown) problem
 Aaliyah solves a Separate (Change Unknown) problem
 Aaliyah solves a Separate (Change Unknown) problem
 Melissa solves a Separate (Result Unknown) problem
 CLIP 3.25: Melissa solves a join (Change Unknown) problem
Multiplication and Division

 Direct Modeling strategy for a Multiplication problem
 Direct Modeling strategy for Measurement Division, total counted first
 Direct Modeling strategy for Measurement Division, total counted later
 Direct Modeling strategy for a Partitive Division problem
 Counting strategy for a Multiplication problem
 Derived Fact strategy for multiplication
 Derived Fact strategy for multiplication
 Derived Fact strategy for Multiplication problem, in which amount in a group is partitioned
 Direct Modeling strategy for Measurement Division with a remainder
 Direct Modeling strategy for Measurement Division with a remainder, adjusted for child
 Watch Austin solve a Multiplication and Measurement Division problem
 Now watch Austin solve a Partitive Division problem
BaseTen Number Concepts

 Counting by Ones strategy to solve a baseten Multiplication problem
 Counting by Tens strategy for a baseten Multiplication problem
 Counting by Tens strategy for a baseten Multiplication problem
 Counting by Tens strategy for baseten Measurement Division
 Counting by Tens strategy for baseten Measurement Division
 Direct Place Value strategy for a baseten Multiplication problem with followup questions
 Counting by Tens strategy for baseten Measurement Division of more than 100 objects
 Direct Place Value strategy for baseten Measurement Division of more than 100 objects, in Spanish
 Using a Direct Place Value strategy to solve baseten Measurement Division of more than 100 objects
 Watch Emma solve a baseten Measurement Division problem
 Now watch Emma solve a Partitive Division problem with similar numbers
 Evan solves a baseten Multiplication with extras problem for the first time
MultiDigit Problems

 Direct Modeling with Tens strategy for a Join (Result Unknown) problem
 Direct Modeling with Tens strategy for a Separate (Result Unknown) problem, with no trading
 Direct Modeling with Tens strategy for a Separate (Result Unknown) problem, with no trading
 Solving a Separate (Result Unknown) problem with an emergent understanding of ten as a unit
 Combining the Same Units Invented Algorithm for addition
 Combining the Same Units Invented Algorithm for addition, with an error that is addressed
 Combining the Same Units Invented Algorithm for addition, supported by student written notation
 Incrementing Invented Algorithm for subtraction with student notation
 Incrementing Invented Algorithm for subtraction with teacher notation of child's thinking
 Combining the Same Units Invented Algorithm for subtraction
 Incrementing Invented Algorithm for Join (Change Unknown)
 Incrementing Invented Algorithm for Join (Change Unknown), with a followup question
 Compensating Invented Algorithm for addition
 Compensating Invented Algorithm for addition
 Direct Modeling with Tens strategy for a Multiplication problem
 Adding strategy for Multiplication, in Spanish
 Adding strategy for Multiplication
 Invented Algorithm for a Multiplication problem
 Invented Algorithm for a Multiplication problem, with followup questions
 Elijah uses a Direct Modeling by Tens strategy for a harder problem
 Elijah uses an Invented Algorithm for an easier problem, 1 followup questions
 Zakyla solves a multidigit Multiplication problem, and her thinking is extended
 Emma solves a multidigit Multiplication problem, and her thinking is extended
NCTM Classroom Resources 
Resources (lessons, videos, games) from the National Council of Teachers of Mathematics
Printable Math Worksheets 
Browse printable math worksheets for grades K8
iXL 
Practice sets for grades PreK  12
ThoughtCo. 
Math tutorials, worksheets by grade, resources for all topics. A sample of math strategies for elementary grades.
Flocabulary 
Math vocabulary practice (Free 30day trial)
Hand2Mind 
Excellent resource with access to lessons, practice problems, videos
National Student Support Accelerator 
A fantastic math tutoring resource library full of lessons and activities!
Teaching Number Sense 
What every tutor needs to know about how kids learn number concepts
Distributive Property
 How to Teach Distributive Property
 Distributive Property Explained  Friendship Bracelets
 Distribute Property Explained  Part 2
 Hands on Activity
 Worksheet #1
 Worksheet #2
 Worksheet #3
Order of Operations
Identifying Angles
Identifying Shapes
Area & Perimeter