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).
More about area: Area of rectangles and the distributive property
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).
Angles: grade 4
These videos match topics in Math Mammoth Geometry 1 worktext (Blue Series).
How to use a protractor to measure & draw 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).
Grade 5
These videos match topics in Math Mammoth Geometry 1 worktext (Blue Series).
Grade 6
These videos match topics in Math Mammoth Geometry 2 worktext (Blue Series).
Area of parallelograms and triangles
Find the area of a triangle by drawing and measuring the altitude
Grade 7
These videos match the topics in Math Mammoth Geometry 2 and Math Mammoth Geometry 3 worktexts (Blue Series).
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
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