STEM Courses and Certifications

The Organic Chemistry Tutor

Oxidation and Reduction Reactions - Basic Introduction

Learn to identify oxidation and reduction, determine oxidizing and reducing agents, and recognize redox reactions through half-reactions and examples.

• YouTube
• 16 minutes
• Self-Paced
• Free Video

Professor Dave Explains

The Life and Death of Stars - White Dwarfs, Supernovae, Neutron Stars, and Black Holes

Explore how low- and high-mass stars evolve and what remains after their deaths, including white dwarfs, neutron stars, and black holes.

• YouTube
• 17 minutes
• Self-Paced
• Free Video

Professor Leonard

Calculus 3 - An Introduction to Vectors

Introduces vector addition, subtraction, position and unit vectors, and magnitude as foundations for multivariable calculus.

• YouTube
• 2 hours 38 minutes
• Self-Paced
• Free Video

Professor Leonard

Calculus 2 - The Natural Log Function

Explore the natural log function in this focused Calculus 2 lecture.

• YouTube
• 2 hours 23 minutes
• Self-Paced
• Free Video

Professor Leonard

Calculus 1 - Properties of Limits - Techniques of Limit Computation

Learn the properties of limits and techniques for computing limits in this introductory Calculus 1 lecture.

• YouTube
• 3 hours
• Self-Paced
• Free Video

Professor Leonard

Calculus 1 - Lines, Angle of Inclination, and the Distance Formula

An introductory calculus lecture develops lines, angles of inclination, and the distance formula as foundational coordinate-geometry tools.

• YouTube
• 49 minutes
• Self-Paced
• Free Video

Khan Academy

Helper T Cells - Immune System Physiology

Learn how helper T cells activate B cells as part of the adaptive immune response.

• YouTube
• 21 minutes
• Self-Paced
• Free Video

Khan Academy

Linear Combinations and Span - Vectors and Spaces - Linear Algebra - Khan Academy

Understand how linear combinations generate the span of vectors in multidimensional spaces.

• YouTube
• 21 minutes
• Self-Paced
• Free Video

Khan Academy

Phases of Meiosis

An overview of meiosis traces its major phases, from prophase through anaphase II, with attention to variation.

• YouTube
• 27 minutes
• Self-Paced
• Free Video

Khan Academy

Phases of Mitosis

An explanation of mitosis that follows interphase through prophase, prometaphase, and metaphase.

• YouTube
• 21 minutes
• Self-Paced
• Free Video

Khan Academy

Transcription and mRNA Processing - Biomolecules - MCAT - Khan Academy

Learn how RNA polymerase transcribes DNA and how introns and exons are processed into mature mRNA.

• YouTube
• 10 minutes
• Self-Paced
• Free Video

Khan Academy

DNA Replication and RNA Transcription and Translation

Learn how DNA replicates and how genetic information is transcribed into RNA and translated into proteins.

• YouTube
• 15 minutes
• Self-Paced
• Free Video

Teaching Tech

3D Printed Fractal Vise - The Coolest Tool You Didn't Know You Needed

Design and 3D-print a fractal vise whose linked jaws morph to clamp almost any shape, from CAD planning through assembly and testing.

• YouTube
• 15 minutes
• Self-Paced
• Free Video

Cutting Edge Engineering Australia

Line Boring and Bore Welding CAT 789 Dump Truck Suspension Part - Sir Meccanica WS2

Repairs a Caterpillar 789 dump-truck suspension eye using line boring, bore welding, machining, and bearing installation.

• YouTube
• 42 minutes
• Self-Paced
• Free Video

Kitten Lady

Learn How Baby Kittens Grow: 0-8 Weeks

Comprehensive guide on kitten development from birth to 8 weeks, covering age determination, milestones, and care techniques for each stage of growth.

• YouTube
• 20 minutes
• Self-Paced
• Free Video