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Video lessons for elementary geometry topics

This is a collection of free video lessons for elementary and middle school geometry topics (grades 1-7). Please choose a topic from the list below.


Shapes: grades 1-3

These videos match topics in Math Mammoth Early Geometry worktext (Blue Series).

Basic shapes (grade 1)

Rectangles and squares and geometric patterns (grade 2)

Some special quadrilaterals (grade 3)


Area and perimeter: grade 3

These videos match topics in Math Mammoth Early Geometry worktext (Blue Series).

Perimeter

Problems with perimeter

More about area: Area of rectangles and the distributive property

Area units

Problems to solve: area of rectangles

Area and perimeter problems — rectangular shapes


Area and perimeter: grade 4

This video matches a topic in Math Mammoth Geometry 1 worktext (Blue Series).

Area versus perimeter


Angles: grade 4

These videos match topics in Math Mammoth Geometry 1 worktext (Blue Series).

Lines, rays, and angles

How to use a protractor to measure & draw angles

Estimating angles

How to draw a right angle (perpendicular line) and a rectangle


Polygons: grades 4-5

These videos match topics in Math Mammoth Geometry 1 worktext (Blue Series).

Parallelograms

Acute, obtuse, and right triangles

Polygons—introduction

Circles


Grade 5

These videos match topics in Math Mammoth Geometry 1 worktext (Blue Series).

Area and perimeter problems

Classify triangles

Classify quadrilaterals

Volume of a rectangular prism and cubic units


Grade 6

These videos match topics in Math Mammoth Geometry 2 worktext (Blue Series).

Area of parallelograms and triangles

Area of polygons

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

Surface area

Introduction to conversions between units of area

Volume of rectangular prism with fractional edge length


Grade 7

These videos match the topics in Math Mammoth Geometry 2 and Math Mammoth Geometry 3 worktexts (Blue Series).

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

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



See also

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