Math Mammoth on Facebook

Math Mammoth on Google+







Blog

Free pre-algebra videos for middle school

This is a collection of free math videos for pre-algebra level (middle school), showing varied exercises for each topic. They are recorded in high-density (HD) and are viewable both here as well as at my Youtube channel. They match Math Mammoth Grade 7 curriculum but will also work no matter which curriculum you follow (in other words, the videos don't rely on you having Math Mammoth curriculum).

Jump to:


These videos are usable for students, teachers, and parents. You can use them...

  • To learn these topics yourself (if you're a student for example, or an adult needing a refresher)
  • As lesson plans for teaching these topics. Often, one video from below can be made into several lessons with students.

Please choose a pre-algebra topic from the list below to view a video tutorial for that topic.


The language of algebra

The topics below provide an foundation to principles used in algebra (and pre-algebra).

The order of operations

What are expressions & equations?

Working with expressions & equations

The commutative & associative properties

(The distributive property — simple version, for grade 6)

The distributive property — regular version, for grade 7 or pre-algebra


Working with expressions

Simplifying and writing expressions 1: length and perimeter

Simplifying and writing expressions 2: area

Factoring linear expressions: using the distributive property backwards


Integers

Introduction to integers - grades 6-7

Addition of integers - grades 7-9

Subtraction of integers - grades 7-9

Multiplication of integers - grades 7-9

Division of integers - grades 7-9

Lessons on integers: solved examples - grades 7-9


The simplest equations

Solving equations - beginner lesson - examples with a pan balance

Addition and subtraction equations

Multiplication and division equations


Rational numbers

What are rational numbers?

Add & subtract negative fractions and decimals

Multiply negative fractions and decimals

Divide rational numbers

Many operations with rationals, plus complex fractions

Unit rate word problem

Convert fractions to decimals

Simple equations involving decimals

Simple equations involving fractions

Simple equations involving percentages


Linear equations

Two-step equations

Variable on both sides

Equations involving parentheses

Equations with fractions

How to use the formula for distance, rate (speed), and time to solve problems

Writing equations for word problems

Inequalities

Graphing equations

Introduction to slope


Ratios and proportions

How to find the unit rate, including with fractions

Basic proportion word problems

How to calculate distances on the map or in reality using the map scale

The rest of the videos about ratios and proportions are here.


Percent

Basic percent word problems

Simple interest

Percentage of change

Percentage difference (relative difference)

Percent of increase/decrease: write an equation to solve for the original price


Geometry

These lessons belong to Math Mammoth Grade 7 / pre-algebra course. Other pre-algebra courses may cover different geometry topics.

Unknown angle problems

Angles in a triangle

Drawing geometric shapes with given conditions

Drawing triangles with given conditions

Pi and the circumference of a circle

How to calculate the area of a circle, plus simple proof for the formula


The Pythagorean Theorem

Square roots

Equations that require taking a square root

The Pythagorean Theorem

Applications of the Pythagorean Theorem 1: area of an isosceles triangle

Applications of the Pythagorean Theorem 2: diagonal of a square

Applications of the Pythagorean Theorem 3: volume of a triangular prism

Applications of the Pythagorean Theorem 4: perimeter of a trapezoid



Math Mammoth Tour


Confused about the different options? Take a 7-day virtual email tour around Math Mammoth! You'll receive:

An initial email to download your GIFT of over 400 free worksheets and sample pages from my books; 6 other emails on 6 subsequent days that describe the different series of Math Mammoth products, answering the most commonly asked questions, including "What is the difference between all these different-colored series?"

This way, you'll have time to digest the information over one week, plus an opportunity to ask me personally which book would be right for your child or students.

Note: You will FIRST get an email that asks you to confirm your email address. If you cannot find this confirmation email, please check your SPAM/JUNK folder.

"Mini" Math Teaching Course


This is a little "virtual" 2-week course, where you will receive emails on important topics on mathematics education. The topics include:

- Teaching multiplication tables
- Why fractions are so difficult
- How to help a student who is behind
- Should you use timed tests
- The value of mistakes
- And more!

You will also receive a GIFT of over 400 free worksheets and sample pages from my books right in the very beginning. smile

Note: You will FIRST get an email that asks you to confirm your email address. If you cannot find this confirmation email, please check your SPAM/JUNK folder.

Join over 25,000 others!


Maria's Math Tips is my email publication that comes out usually once a month. It's filled with math teaching resources, Math Mammoth news & discounts, humor, giveaways, and more! The content is equally good for all of us who teach math.

Peek at the previous volumes here.

By subscribing you will also receive:

  • A GIFT of over 400 free worksheets and sample pages from my books.
  • Once or twice a year, you may also receive an email where I promote something from Inspire4.com — I simply want to spread the word about it.

© 2006-2017 MathMammoth.com