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Courses under development
These puzzles help you practice the vocabulary about Gases and the Gas Laws, including Boyle's Law, Charles's Law, Gay-Lussac's Law, and the Ideal Gas Law. There is a word search and a crossword puzzle, as well as answer keys for both puzzles.
Free
In this 2-page handout we discuss an isomorphism between the real numbers under addition〈R, +〉, and the positive real numbers under multiplication〈R+, ·〉. This is a great example to deepen your understanding of isomorphisms.
Free
In this course you'll learn about Groups - a key, abstract structure used throughout Abstract Algebra and beyond. We'll cover homomorphisms, cyclic groups, ways to build groups, and much more.
Free
Mathematica Essentials is a comprehensive first course in Mathematica. Mathematica can be used in ANY computational field: financial analysis, machine learning, data visualization, bioinformatics, speech recognition, and much, much more.
$40
Our Chemistry Lessons playlist gives you practical help for the topics that chemistry students often struggle with. Each video has multiple example problems worked out in full.
Free
This course will take you on an awe-inspiring journey, spanning billions of years, from the origins of life on Earth to the evolution of modern human populations.
$40