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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

Basic shapes (grade 1)

Rectangles and squares and geometric patterns (grade 2)

Some special quadrilaterals (grade 3)


Area and perimeter: grades 3-5

Perimeter

Units of area

Problems to solve: area of rectangles

Area of rectangles and the distributive property

Area and perimeter problems — rectangular shapes

Area versus perimeter


Angles: grade 4

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

Parallelograms

Acute, obtuse, and right triangles

Polygons—introduction

Circles


Grade 5

Area and perimeter problems

Classify triangles

Classify quadrilaterals

Volume of a rectangular prism and cubic units


Grade 6

Area of parallelograms and triangles

Area of polygons

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

Introduction to conversions between units of area

Volume of rectangular prism with fractional edge length


Grade 7

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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