Solving Systems of Equations by Elimination - Algebra I

In Algebra I video tutorial series, this video is about Solving System of Equations by Elimination. The video has two examples to show you how to Solve System of Equations by Elimination.

How to Solve a system of equations using elimination - Algebra I

Absolute Value Equations and Inequalities - Algebra I

In this video you will learn about absolute value equations and inequalities. Absolute value is the distance of a number from zero. The symbol is two vertical lines around the number(s) like these: | |
An absolute value equation is enclosed with this symbol. An equation is a mathematical phrase which includes an equal sign. Absolute value inequalities are also enclosed within the same symbol. An inequality is a mathematical phrase which says that values are not equal. Absolute value equations and inequalities must be solved twice but using different methods.

How to Solve Absolute Value Equations and Inequalities - Algebra I

Solving Inequalities with Multiplication or Division - Algebra I

In this video you will learn how to solve inequalities with multiplication or division.  To solve an inequality using multiplication or division means to simply use inverse operations only including multiplication and division. Inverse operations are what lead to the solution of an inequality. The solution of an inequality doesn't give the exact value of the variable since you don't use equal signs in inequalities. There are four symbols that are used in inequalities: greater than, less than, greater than or equal to, and less than or equal to. Watch the following video for more details on this topic.

How to Solve Inequalities with Multiplication or Division - Algebra 1

Linear Functions and Patterns - Algebra I

In this video you will learn about linear functions and patterns. A linear function is also known as a linear equation which is an equation that has a graph of a non vertical line or part of a non vertical line. A function is a relationship that pairs each input value with exactly one output value. An input value of a function is known as the independent variable which is always graphed on the x-axis. An output value of a function is known as the dependent variable which is always graphed on the y-axis. To learn more about this topic, please watch the following algebra video.

What are Linear Functions - Algebra 1

Using Graphs to Relate Two Quantities - Algebra I

In this video you will learn how to use graphs to relate two quantities. Two important key words that you need to know for this topic are independent variable and dependent variable. Independent variable is the input value of a function and is always graphed on the x-axis. The dependent variable is always graphed on the y-axis and is the output value of a function. The example provided in this video is a word problem in which you have to identify the independent and dependent variable. Then you have to describe how to graph relates to both quantities. For more details on this topic, please watch the following algebra video.

Using Graphs to Related Two Quantities - Algebra 1

What are Compound Inequalities - Algebra I

In this video you will learn about compound inequalities. A compound inequality is a combination of two or more inequalities that are joined by the word 'and' or the word 'or'. This means that there are two types of compound inequalities and therefore two different ways to graph. For an 'and' compound inequality, you have to find a solution that makes both inequalities true. For an 'or' inequality, the solution has to make one or the other true. To graph an 'and' compound inequality, the graph connects both points, whereas in an 'or compound inequality, the points take off in different directions in most questions in algebra I.

What are Compound Inequalities - Algebra 1

Solving Inequalities with Addition or Subtraction - Algebra I

In this video you will learn how to solve inequalities with addition or subtraction. To solve with addition or subtraction means that in order to find the solution of the inequality you only have to add or subtract. Inverse operations are the opposite operations which help to find the solution. Since the inverse of addition is subtractions, that means the inverse of subtraction is addition! Therefore, just these two operations can solve an inequality in this topic.

How to Solve Inequalities with Addition or Subtractions Operations - Algebra 1

Introduction to Inequalities - Algebra I

In this video we will be doing a small introduction to inequalities. An inequality says that two values are not equal. In this video we will cover the definition of an inequality, the symbols that are used in an inequality, and how to write and compare inequalities. The symbols for inequalities are greater than, less than, greater than or equal to, and less than or equal to. In order to write an inequality, you must use at least one of these symbols. Inequalities could have more than one symbol. For more detail, please watch the following video in our algebra unit.

What are Inequalities in Math - Algebra 1

How to Solve Equations with Variables on Both Sides - Algebra I

In this video you will learn how to solve an equation with variables on both sides. The first step is to combine like terms. Then use inverse operations to eliminate the values that are being added, subtracted, etc. to the variable. Inverse operations are opposite operations. The inverse of addition is subtraction and the inverse of multiplication is division. Equations with variables on both sides often have the same variable which you have to find the value of. Otherwise, if there are two different variables, solve for the given variable.

How to Solve Equations with Variables on Both Sides - Algebra 1

How to Solve Literal Equations - Algebra I

In this video you will learn how to solve literal equations. Literal Equations are equations that include more than one variable and you have to solve for one specific variable. In literal equations, when you solve for a variable you are just trying to isolate that variable. A solution to a literal equation could be x = b + 7. So you don't exactly get the value of the variable, just a solution. To isolate the variable, you have to get rid of anything that is being added, subtracted, etc. to the target variable. You do this by using inverse operations.

How to Solve Literal Equations - Algebra 1

Solving Multi Step Equations - Algebra I

In this video you will learn how to solve multi step equations. An equation is a mathematical phrase which includes an equal sign. In a multi step equation, you are solving for the variable. The variable is a lower case letter which is used to replace an unknown value in mathematics. In order to solve the multi step equations, you must use inverse operations. The inverse of adding is subtracting and the inverse of multiplying is dividing. A multi step equation takes more than two steps two find the solution. The solution is the value of the variable.

How to Solve Multi Step Equations - Algebra 1

How to Solve Two Step Equations - Algebra I

In this video you will learn how to solve two step equations. An equation is a mathematical phrase which shows that two values are equal. A two step equation is an equation which takes to steps to solve for the variable. The variable is an unknown value in math which is replaced by a lower case letter. Inverse operations are when you do the opposite of an operation to eliminate and get the value of the variable. The inverse of addition is subtraction and the inverse of multiplication id division. To learn more, watch the following algebra I video.

How to Solve Two Step Equations - Algebra 1

Intro to Equations - Algebra I

In this video we will be covering an introduction to equations. An equation is a mathematical phrase which uses an equal sign to connect two expressions. This video will cover three parts of equations, which are classifying equations, writing equations from words, and identifying solutions for equations. An equation can be classified as either true, false, or open. Writing equations from words is the same as translating word statements into equations. To identify a solution of an equation you must plug in the given value into the variable and solve to see if the solution works.

Introduction to Equations - Algebra 1

Convert Word Statements into Algebraic Expressions - Algebra I

In this video you will learn how to convert verbal expressions or word statements into algebraic expressions. When you are given word statements and are asked to convert into an algebraic expressions, you are simply writing an expressions. An expression is a mathematical phrase or sentence that consists of variables and operations. Converting a word statement to an expression is very simple. Watch the following video to learn more.

Translate Word Statements into Algebraic Expressions - Algebra I

Simplify Expressions using Distributive Property - Algebra I

In this video you will learn how to simplify an expression using the distributive property. An expression in a mathematical phrase which includes variables, operators, and numbers. In the Distributive Property, you distribute a single outer term to two or more terms within the parenthesis. This math tutorial will show you several examples of expressions and how to simplify them using the Distributive Property.

How to Simplify Expressions by using Distributive Property - Algebra 1

Properties of Real Numbers - Algebra I

In this video you will learn about the properties of real numbers. The properties of real numbers are 
Commutative Property of addition and multiplication
Associative Property of addition and multiplication
Identity Property and the zero property.
Zero property only applies to multiplication and multiplication also has a property of negative one. Watch the following video to learn more.

Properties of Real Numbers - Algebra I

Order of Operations and Evaluation of Expressions - Algebra I

In this video you will learn how to apply the order of operations in the evaluation of expressions. The order of operations can be simplified down to one word: PEMDAS.
P: Parenthesis
E: Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction

When evaluating an expressions, you are simplifying it. Inverse operations is also another important concept in the evaluation of expressions. Inverse operations are just the opposite operations. The opposite of addition is subtraction and opposite of multiplication is division.

Order of Operations and Evaluation of Expressions - Algebra 1

Variables and Expressions - Algebra I

In this video you will learn about variables and expressions. A variable is a lower case letter that is used to represent an unknown value in mathematics. An expressions is a mathematical statement which consists of variables and numeric operations. An expression can only be simplified and not solved unless the value of a variable is given to you. This is the first topic in our algebra unit and outlines the basics of algebraic expressions and equations.

Variables and Expressions - Algebra 1

Volume of Cone - 7th Grade Math

In this video you will learn how to find the volume of a cone. Volume is the total capacity that a three dimensional shape can hold. A cone is a three dimensional shape. The formula for finding the volume of a cone is 1/3 x pi x radius squared x height. Watch the 7th grade math video for more on this topic.

Volume of Cone = 1/3(π × r2×h)

Volume of Cone - 7th Grade Math

Volume of Pyramid - 7th Grade Math

In this video you will learn how to find the volume of a pyramid. Volume is the amount of capacity a three dimensional shape can hold. A pyramid is a 3D shape. This 7th grade math video will teach you how to find the volume with step by step instructions.

The formula for volume of Pyramid is

Volume = 1/3 ( LxWxH)

Volume of Pyramid - 7th Grade Math

Surface Area of a Cylinder - 7th Grade Math



 

In this video you will learn how to find the surface area of a cylinder. A cylinder is a three dimensional shape. To find the surface area of a cylinder, use the formula 2 x pi x radius x height + 2 x pi x radius squared. Radius the value of the circle that stretches from the center of the circle to any end. Pi has an approximate value of 3.14.





  

 

Surface Area of a Cylinder - 7th Grade Math

Surface Area of a Pyramid - 7th Grade Math

In this video you will learn how to find the surface area of a pyramid. Surface is the total area of a three dimensional shape. A pyramid is  3D shape consisting of triangles and a rectangular base ( sometimes square base). The formula is to find the area of the 2D shapes within the 3D shape ad add to find the surface area.



Surface Area of a Pyramid - 7th Grade Math

Area of Irregular Shapes -7th Grade Math

In this video you will learn how to find the area of irregular shapes. An irregular shape consists of regular shapes within the irregular shape. The method is to first find the separate areas of the regular shapes and the add together to find the total area. Watch the 7th grade math video to learn more.




Area of Irregular Shapes -7th Grade Math

Area of Circle - 7th Grade Math

A circle is a 2 dimensional plane shape that has no sides and no angles. Remember that a circle is not a polygon. To find the area of a circle you need to multiply pi times the radius squared. If you know only the diameter then the formula is pi divided by 4 times the diameter squared. Or when you know only the circumference the formula is circumference squared divided by 4 times diameter. In this video we have provided all the types of formulas to find the area of a circle using different examples. For further details watch the following video.

Area of Circle - 7th Grade Math

Volume of a Sphere - 7th Grade Math

In this video you will learn how to find the volume of a sphere. the volume is how much capacity a three dimensional object can hold. A sphere is a three dimensional shape. The formula for volume of a sphere is 4/3 x pi x radius cubed. Watch the above 7th grade math video to learn more.

Volume of a Sphere - 7th Grade Math

Surface Area of Prisms - 7th Grade Math

In this video you will learn how to find the surface area of a rectangular prism and a triangular prism. Surface area is the total area of the two dimensional shapes which make up a three dimensional shape. The formula for finding the surface area of a rectangular prism and a triangular prism is to first find the area of the two-dimensional shapes and then add to find the surface area.
Check out the video below for more indormation...

Surface Area of Prisms - 7th Grade Math

Surface Area of a Sphere - 7th Grade Math

 In this video you will learn how to find the surface area of a sphere. A sphere is a three dimensional shape. Surface area is the total area of a three dimensional object.

The formula for finding the surface are of a a sphere is 4 x pi x radius squared. The radius is the line that stretches form the center of the sphere to any end of the sphere.
Check out the video below for more information...

Surface Area of Sphere =4πR²

Surface Area of a Sphere - 7th Grade Math

Volume of a Rectangular Prism - 7th Grade Math

In this video, you will learn how to find the volume of a rectangular prism. Volume is how much space a three dimensional shape occupies. You will learn how to find the volume using the formula LxWxH. Length multiplied by width multiplied by height. A rectangular prism is a three dimensional shape which has 6 faces, 8 vertices, and 12 edges.

Volume of a Rectangular Prism - 7th Grade Math

Area of Triangles - 7th Grade Math

This video explains how to find the area of triangles. The formula for finding the area of any triangle is 1/2xBxH. That means you have to multiply the base by the height and divide by two to get the area. The formula is the same for all types of triangles. Learn how to use the formula for area of triangle to calculate the area of the triangle shown in the example in the video.

Area of Triangles - 7th Grade Math

Volume of Cube - 7th Grade Math

In this video, You will learn how to find the Volume of Cube.
Cube Definition:
A cube is three dimensional shape which has all the sides such as length, height and width same in measurement.

To find the Volume of a cube, follow the formula which is L x W x H.
L stands for length.
W stands for width.
H stands for height.
In a cube all of the sides are of the same measurement and so we will multiply the same measurement three times.

Volume of Cube - 7th Grade Math

Area of Parallelogram -7th Grade Math

Topic:Learn how to find the Area of Parallelogram

Parallelogram Definition:
Parallelogram is a flat shape with opposite sides parallel and equal in length.

To find the Area of Parallelogram, we have to multiple Base with Height, so our Formula will be

Area of Parallelogram= Base X Height
A=BXH

How to Find Area of Parallelogram - 7th Grade Math

Area of Trapezoids -7th Grade Math

Learn How to Find the Area of Trapezoid.

Definition of Trapezoid:
Trapezoid is a four sided flat shape with straight sides that has a pair of opposite sides parallel

To find the area of Trapezoid, we have to add the two bases and then divide by 2 and then Multiply with Height of Trapezoid.

Formula for Area of Trapezoid =((Base1+ Base2)/2) X Height

How to Find Area of Trapezoid Shape -7th Grade Math Tutorial

Find the Perimeter of Polygon -7th Grade Math

In this video you will learn how to find the Perimeter of Polygon shapes.

How to find Perimeter of Polygon shapes -7th Grade Math

8th-Grade Math

Number System

1. Estimating the Value of Expressions
2. Rational Numbers
3. Irrational Numbers
4. Comparing and Ordering Rational and Irrational Numbers

Expressions and Equations

1. Exponents
2. What is Scientific Notation
3. One Step Linear Equations
4. One Step Linear Equations Word Problems
5. How to Solve Non-Linear One Step Linear Equations
6. How to Graph Equations
7. Slope 
8. Slope-Intercept Form
9. Proportional Relationships
10. Comparing Proportions
11. How to Solve Systems of Equations using Graphs
12. How to Solve Systems of Equations using Substitution
13. Solving Systems of Equations using Linear Combination
14. How to Solve Word problems using System of Equations

Functions

1. Functions
2. Linear and Non-Linear Functions
3. How to Compare Functions
4. How to Apply Functions

Geometry

1. Pythagorean Theorem in Two Dimensions
2. How to use the Pythagorean Theorem
3. Pythagorean Theorem in Three Dimensions
4. Volume
5. How to Coordinate Geometry
6.  What are Transformations
7. Properties of Transformations
8. What are Congruent Figures
9. What are Similar Figures
10. Angles

Statistics and Probability

1. What are Scatter Plots
2. What are Trend Lines
3. Interpreting Linear Models
4. What are Two-Way Tables