VIDEO

Cause and Effect of an AV Heart Block

Heart blocks can be driven by congenital, aging, or heart disease factors. Learn about heart attacks, block severity, medical intervention, treatment, and more!
VIDEO

Author’s Position

Opinions find their way into both the spoken and written word, and reveals an author's bias or position on a topic. Learn more about author's position in writing!
VIDEO

What is Light?

Light is a broad spectrum, but visible light is only a small range of that spectrum. Learn how light is both a wavelength and a particle called a photon here!
VIDEO

Computation with Percentages

Percentage problems can be solved by changing the words into a mathematical equation. Learn how to translate and solve computations with percentages!
ADDITIONAL RESOURCES:

Practice Questions

VIDEO

What is a Line Plot?

Understand line plots with easy graph examples, data interpretation, fractions, and step-by-step practice problems for math students.
VIDEO

Fall Prevention

25% of people 65 and older fall every year, with over 3 million requiring treatment in an emergency department. Click here for a lesson on fall prevention!
VIDEO

Author Credibility

In writing, a credible text means having reputable information from a trusted source. Learn why both text and author credibility is important and how to find it!
VIDEO

Nuclear Fusion

Nuclear fusion creates energy by fusing the two atoms' nuclei. Learn how Einstein's equation relating mass and energy shows the role of nuclear fusion.
EXAM OVERVIEW
AACN CCRN

Adult CCRN® Practice Test

Take a free Adult CCRN practice test for critical care nursing certification. Practice clinical judgment, professional caring, and AACN Synergy Model topics.
VIDEO

Proteins

Proteins are large molecules constructed through the linking of amino acids. These molecules are essential for structure, function, and cell maintenance.