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Free math video lessons for 6th grade

This is a collection of free math videos for 6th grade, showing varied exercises for each topic. They match Math Mammoth Grade 6 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).

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 topic from the list.


Chapter 2: Introduction to algebra

Expressions – What are expressions and how to evaluate them

Expressions – write expressions from word phrases

Writing and simplifying expressions 1: length and perimeter

Writing and simplifying expressions 2: area

The distributive property

Factoring linear expressions

Equations (an introduction)

Inequalities

Using two variables – an introduction to equations with two variables


Chapter 3: Decimals

Review lesson for 6th grade math: fractions and decimals

Multiplying decimals by decimals: the shortcut

Long division with decimals, plus fractions to decimals

Fractions and decimals – how to convert fractions to decimals

Divide decimals by decimals

Convert metric units

Convert customary units

Convert between customary and metric units of measurement

Fractions and decimals word problem: unit prices


Chapter 4: Ratios

Unit rates

Word problems involving unit rates

Using ratios to convert measurement units


Chapter 5: Percent

What is "percent"?

What percentage / How many percent...?

How to find a percentage of a number — mental math

How to calculate discounts


Chapter 6: Number theory

The sieve of Eratosthenes (for finding primes)

Prime factorization

The greatest common factor

The least common multiple


Chapter 7: Fractions

Adding and subtracting mixed numbers

Multiplying mixed numbers

Simplifying before multiplying

How to divide fractions & reciprocal numbers

Reciprocal numbers and the shortcut for fraction division

Fraction division: concept and applications

Problem solving: four word problems involving fractions


Chapter 8: Integers

Integers – introduction

How to plot points on the coordinate grid

The coordinate grid: word problems & applications

Addition and subtraction as movements (on the number line)

Subtracting a negative integer: three models

Graphing: how to graph linear patterns in the coordinate grid


Chapter 9: Geometry

Area of parallelograms

Area of right triangles

Area of triangles

Find the area of a triangle by drawing and measuring the altitude

Area of polygons

Converting between units of area

Volume of rectangular prism with fractional edge length


Chapter 10: Statistics

Understanding statistical variability and distributions

Using mean, median, and mode

Measures of variation

Making histograms

Boxplots

Stem-and-leaf plots

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