After giving a situation with a number of reactants, Sal is able to review the behavior of those ions according to their stability. Amines and acyl chloride are used first. Next, he looks at the mechanism at each point to move from a...

After leading viewers through the basics of carboxylic structure, Sal uses this lecture to describe many molecules, or classes of molecules, that can be derived from acetic acid.

The mechanism with a ketone and a similar version with an aldehyde is described, where the carbonyl group and pair of electrons belonging to the oxygen react with the hydronium in water.

The animals all sing about the earth. This would be a great video to show during a unit about environmental stewardship. 

Would you believe marine animals can make their own light? An online resource describes the process of bioluminescence and how animals in the ocean use it to survive. The lesson features a catchy tune that describes the behavior of ocean...

Be the future of engineering. Scholars learn about the future of engineering, particularly in the areas of sustainability, infrastructure, security, health, and general quality of life. The informational video looks at several examples,...

Interested in becoming an engineer? An informational and educational video teaches viewers about the various ways to become an engineer. It uses an example of building an airplane wing to describe the branches of engineering that...

Did you know that only 2.5 percent of Earth's water is drinkable? An engaging video describes the process of engineering design to solve real-world problems by using a desalination plant as an example. Scholars learn about design...

The future of medicine involves engineering. Viewers of an educational video see how engineering plays a role in the discovery and development of new medicines. It also looks at targeted drug delivery systems, classical and reverse...

Ancient fossils have many stories to tell. Scientists must use different strategies to read these remnants. A video lesson explains how archeologists use different strategies to date each specimen. The timeline of a fossil helps identify...

Just how long can a fossil preserve DNA? It seems that DNA becomes unreadable after about 6.8 million years. Learn about the science that helped make this conclusion and the mistakes made along the way in a lesson from a PBS Eons video...

Marie Curie overcame limitations to become the first person to win two Nobel Prizes. A video presentation outlines her work and discoveries in radioactivity. The narrator gives a timeline of her achievements as she sacrificed her...

No matter where you stand on the controversial topic of genetic engineering, the science that makes it possible is extraordinary. An animated video describes a process of genetic engineering involving bacteria. The quick...

Sometimes in science mysteries remain mysteries for a long time! The discovery of diffuse interstellar bands happened nearly 100 years ago, yet it took until 2015 for scientists to understand a single band. Pupils learn about the...

Let the machines do what they do best. The 37th installment of the Crash Course Statistics series focuses on unsupervised machine learning. It describes two methods, k-means and hierarchical clustering, and provides examples for each.

Use math to help predict the future. Viewers of the 36th Crash Course video covering statistics hear about machine learning. They see how logistic regression, linear discriminant analysis, and K nearest neighbors are all models that help...

Chime in and learn about chi-square tests. An informative video describes when chi-square tests would be appropriate and how to perform chi-square tests. It looks at three different types: the goodness of fit test, the test of...

Give learners the freedom to learn about hypothesis testing. The 28th installment of the Crash Course Statistics series focuses on degrees of freedom and effect size. It looks at how these concepts relate to t-tests and t-distributions.

Heat up your lesson with a useful resource. An informative video describes the three main types of heat transfer: conduction, radiation, and convection. It explains how these methods of heat transfer should be taken in consideration when...

Bernoulli knows best (at least about fluid mechanics). The 13th installment in the Crash Course Engineering series focuses on Bernoulli's principle. Viewers learn the relationship between the speed and pressure of fluids by watching a...

A video flows naturally into a lesson on fluid mechanics. Viewers of an engaging YouTube video learn about the interaction of forces involving fluids. The 12th installment of the Crash Course Engineering series covers stress and strain,...

If you want, watch the video over and over again. The 11th installment of the Crash Course Engineering series focuses on cycles and repetition. It first reviews how heat engines work and applies the idea to heat pumps. It then explains...

Go for a ride on the continental drift. A video animation shows the movement of land over a period of 200 million years. The lesson instructor explains the shift during the animation and gives pupils a unique viewing perspective to...

The subduction model: helping learners understand how continental drift is possible. An animation demonstration illustrates the process of subduction through an analysis of the earth's layers. The instructor narrates the process as the...