Free math video lessons for 8th grade
This is a collection of free math videos for 8th grade topics. This is currently a mixture of my own videos and videos from Khan Academy. We are working on making many more videos (fall 2024)! The videos are matched to the topics in Math Mammoth Grade 8 curriculum. The videos from Khan Academy are not an exact match with the curriculum, but are better than nothing. I just want to list them to help my users in the interim.
Chapter 1
The Order of Operations (review from 7th grade)
Laws of Exponents, part 1 — product and quotient of powers with the same base
Laws of Exponents, Part 2 — power of a power
Laws of Exponents, Part 3 — recap of exponent laws
Scientific Notation: Large Numbers
Scientific Notation: Small Numbers
Scientific notation
Using Scientific Notation in Calculations, Part 1
An extra video that you might find interesting, from Khan Academy:
Calculating red blood cells in the body using scientific notation
Using Scientific Notation in Calculations, Part 2
Chapter 2
Geometric Transformations and Congruence, Part 1
Introduction to transformations
Identifying transformations
Geometric Transformations and Congruence, Part 2
Finding measures using rigid transformations
Rigid transformations, preserved properties
Translations in the Coordinate Grid
Translating points
Drawing image of translation
Reflections in the Coordinate Grid
Reflecting points
Reflecting shapes
Determining reflections
Translations and Reflections
(none)
Rotations in the Coordinate Grid
Rotating points
Defining rotation: example
Sequences of Transformations
Mapping shapes
Sequences of Transformations, Part 2
Testing congruence by transformations: example
Dilations
Dilations intro
Dilations and properties
Dilations in the Coordinate Grid
Dilating points example
Thinking about dilations
Scaling down a triangle by half
Similar Figures, Part 1
Testing similarity through transformations
Similar Figures, Part 2
Similar Figures: More Practice
Review: Angle Relationships
Angle relationships and unknown angle problems
Corresponding Angles
Angles, parallel lines, & transversals
More Angle Relationships with Parallel Lines
Alternate Interior and Alternate Exterior Angles (YT) by Mrs. Kibler
The Angle Sum of a Triangle
Angles in a triangle add up to 180 degrees
Isosceles & equilateral triangles problems
Exterior Angles of a Triangle
Triangle: exterior angles
Angles in Similar Triangles, Part 1
Angles in Similar Triangles, Part 2
Volume of Prisms and Cylinders
Volume of Pyramids and Cones
Volume of a cone: example
Volume of Spheres
Volume of a sphere
Volume Problems
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