## What's New and Recent Updates:

### Correlation Coefficient (solutions, examples, videos, lessons, worksheets, games, activities)

Correlation Coefficient, examples, step by step solutions, videos, worksheets, games and activities that are suitable for Common Core High School: Statistics & Probability, HSS-ID.C.8, linear fit

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### Differentiation Exam Questions (solutions, examples, worksheets, videos, activities)

Differentiation, Examination Questions, Examples and step by step solutions, videos, activities and worksheets that are suitable for A Level Maths

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### Limit of a Sequence (solutions, examples, videos)

How to find the limit of a sequence, examples and step by step solutions, A series of free online calculus lectures in videos

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### Cross Sections and Solids of Rotation (solutions, examples, videos, lessons, worksheets, games, activities)

how to identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify three-dimensional objects generated by rotations of two-dimensional objects, examples and step by step solutions, Common Core High School: Geometry, HSG-GMD.B.4, formulas, circle, pyramids, cones, cylinder, sphere

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### Place Fractions on the Number Line (solutions, examples, videos, worksheets, lesson plans)

how to place fractions on the number line, examples and step by step solutions, Common Core Grade 3

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### 3-D Shapes (songs, videos, games, worksheets, activities)

3-d shapes, solid shapes, kindergarten, Grade 1 kids, explores two-dimensional and three-dimensional shapes, learn about flat and solid shapes independently as well as how they are related to each other and to shapes in their environment, learn to use their words to distinguish between examples and non-examples of flat and solid shapes

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### Volume with Fractional Edge Lengths and Unit Cubes (solutions, examples, worksheets, videos, lesson plans)

volume of a right rectangular prism with fractional side lengths, examples with step by step solutions, extend their understanding of the volume of a right rectangular prism with integer side lengths to right rectangular prisms with fractional side lengths, Common Core Grade 6

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### Coordinate Geometry (solutions, examples, games, questions, videos)

Coordinate Geometry, coordinate geometry problems, Coordinate plane, Slope Formula, Equation of a Line, Slopes of parallel lines, Slope of perpendicular lines, Midpoint Formula, Distance Formula, examples and step by step solutions, questions and answers

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### Coordinate Plane or Cartesian Plane (solutions, examples, videos)

Coordinate Plane, examples and step by step solutions, the coordinate plane or Cartesian plane, points on the Cartesian Plane, quadrants

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### Edexcel Core Mathematics C2 June 2011 (II) (solutions, examples, worksheets, videos, activities)

Solutions and Exam questions for Edexcel Core Mathematics C2 June 2011, Questions 6 to 9, A Level Maths

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### Measurement Word Problems (solutions, examples, videos, worksheets, lesson plans)

how to solve two-step word problems involving measurement and multi-digit multiplication, Common Core Grade 5, examples with step by step solutions

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### Fundamental Counting Principle (videos, worksheets, solutions, examples, activities)

How to use the fundamental counting principle, how the fundamental counting principle can help you determine the number of possible outcomes or combinations, examples with step by step solutions, How to distinguish between the Sum Counting Principle and the Product Counting Principle

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### Geometry Common Core Regents Exam - June 2015 (solutions, examples, worksheets, videos, games, activities)

How to answer past year questions for Geometry Common Core Regents Exam, High School Math, June 2015, past papers, step by step solutions

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### Geometry Common Core Regents Exam - August 2016 (worksheets, solutions, examples, videos, games, activities)

How to answer questions for Geometry Common Core Regents Exam, High School Math, August 2016, examples, step by step solutions and tips

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### Word Form and Numerical Form (solutions, examples, videos, worksheets, lesson plans)

how to write and interpret numerical expressions and compare expressions using a visual model, Common Core Grade 5, examples and step by step solutions, From word form to numerical expressions and diagrams, Show a tape diagram and expression

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### Change 10 Ones for 1 Ten (examples, solutions, worksheets, lesson plans)

how to change 10 ones for 1 ten, 10 tens for 1 hundred, and 10 hundreds for 1 thousand, examples with step by step solutions, Common Core Grade 2

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### Time Zones (songs, videos, worksheets, games, activities)

Learning Time Zones. Explain time zones and how they work, how to use a time zone map to determine times across the globe, Find out how and why time changes as you move around the planet, and how these changes affect you, songs, videos, worksheets, games and activities that are suitable for Grade 4

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### Use Exponents to Name Place Value Units (solutions, examples, videos, worksheets, lesson plans)

how to use exponents to name place value units and explain patterns in the placement of the decimal point, Common Core Grade 5, examples and step by step solutions

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### Adding Integers using Zero Pairs (solutions, examples, videos, worksheets, games, activities)

How to add and subtract integers using zero pairs, integer tiles, and number line, examples and step by step solutions, what are zero pairs, videos, worksheets, games and activities that are suitable for Grade 6

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### Solve doubles and doubles plus 1 (examples, solutions, song, videos, worksheets, lesson plans)

How to visualize and solve doubles and doubles plus 1 with 5-group cards, Common Core Grade 1, examples with step by step solutions, What is Double Plus 1, How to use the doubles plus 1 addition strategy, How to add doubles

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### Division using the Array Model (solutions, examples, videos, worksheets, lesson plans)

how to interpret the unknown in division using the array model, examples and step by step solutions, Common Core Grade 3

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### Metric Conversions - Exponents (solutions, examples, videos, worksheets, lesson plans)

how to use exponents to denote powers of 10 with application to metric conversions, examples and step by step solutions, Common Core Grade 5

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### Integers and Opposite Numbers (solutions, examples, worksheets, videos, lesson plans)

use positive and negative numbers to indicate a change (gain or loss) in elevation with a fixed reference point, examples with step by step solutions, Common Core Grade 6, real-world problems with positive and negative numbers and zero, number line, each nonzero integer has an opposite, number zero is its own opposite

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### Solving Inequalities (examples, solutions, videos)

The rules for solving inequalities, examples and step by step solutions, How to solve Linear Inequalities, when multiplying or dividing by a negative number reverse the sign, inequality, graph and interval notation

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### Addition using number bonds (solutions, examples, videos, worksheets, activities)

How to add using number bonds and Singapore Math, Adding by Making 10 using Number Bonds, Adding Tens and Ones using Number Bonds, examples and step by step solutions

### Joint or Combined Variation (solutions, examples, videos, worksheets, games, activities)

How to solve Joint Variation or Combined Variation word problems, examples and step by step solutions, Grade 9, What is Joint Variation or Combined Variation, Joint Variation Application, Direct, Inverse and Joint Variation

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### Two Column Proofs (examples, solutions, videos, worksheets, games, activities)

How to use two column proofs in Geometry, Practice writing two column proofs, examples and step by step solutions, How to use two column proof to prove parallel lines, perpendicular lines, Grade 9 Geometry, prove properties of kite, parallelogram, rhombus, rectangle, prove the Isosceles Triangle Theorem, prove the Exterior Angle Theorem

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### Find Equivalent Expressions (examples, solutions, videos, worksheets, lesson plans)

how to convert numerical expressions into unit form as a mental strategy for multi-digit multiplication, examples and step by step solutions, Common Core Grade 5

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### Solving Two-Step Equations (solutions, examples, videos)

How to solve Two-Step Equations with decimals and fractions, How to isolate the variable, examples and step by step solutions, undo PEMDAS in reverse to solve

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### Negative Numbers and Integers (solutions, examples, videos)

Learn the concepts of negative numbers and integers, Examples and step by step solutions, absolute value, opposites

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### Adding Integers using the Number Line (solutions, examples, videos, worksheets, games, activities)

How to Add Integers using the Number Line, examples and step by step solutions, Grade 6

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### Parent Functions and their Graphs (solutions, examples, videos, worksheets, games, activities)

linear, quadratic, square root, absolute value and reciprocal functions, transform parent functions, examples and step by step solutions, parent functions with equations, graphs, domain, range and asymptotes, graphs of basic functions that you should know, PreCalculus

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### Solving Equations by Distributive Property (solutions, examples, videos)

How to solve Equations using the Distributive Property, learn the distributive property and how it can be used to solve algebraic equations, examples and step by step solutions

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### Round Decimals Grade 5 (solutions, examples, videos, worksheets, lesson plans)

How to round a given decimal to any place using place value understanding and the vertical number line, examples and step by step solutions, Decompose and round to the nearest tenth and hundredth, Show your work on a number line, Common Core Grade 5, lesson 8

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### Round to Nearest Thousands (solutions, examples, worksheets, lesson plans)

how to round multi-digit numbers to the thousands place using the vertical number line, examples and step by step solutions, Common Core Grade 4

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### Exponents and Square Roots - GRE (solutions, examples, videos)

GRE Test Preparation - Math practice questions, examples and step by step solutions, workbooks, study guides, useful tips and more. Exponents, Zero and Negative Exponents, Square Roots, Rules for Square Roots, Roots of Higher Order, Product Rule, Quotient Rule & Simplifying Square Roots

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### Scientific Notation in Chemistry (solutions, examples, worksheets, videos, games, activities)

convert numbers into and out of scientific notation, How to round with significant figures when you're doing scientific notation problems, examples and step by step solutions, High School Chemistry

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### Solving Equations with variables on both sides (solutions, examples, lessons, videos)

Algebra Help: Solving Equations with variables on both sides, examples and step by step solutions, how to equations that have a term with the variable on both sides of the equation

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### Balancing chemical equations (solutions, examples, videos)

Chemistry: How to balance equations with polyatomic ions, examples and step by step solutions, Three helpful tips and tricks that make Balancing Chemical Equations easier, How to balance chemical equations with polyatomic ions by rewriting H2O as H(OH)

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### Countable Nouns and Uncountable Nouns (examples, explanations, solutions, videos)

English Help: how to distinguish between Countable Nouns and Uncountable Nouns, how to use the articles 'a', 'an' or 'the' for countable nouns, examples, and exercises with step by step explanations, when to use the articles: a, an, the, and the zero article, quantifiers for countable and uncountable nouns

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