In this video, Sap takes a nap, your little ones will learn to read CVC words ending in 'ap'. Help your little one learn to read by using their knowledge of letter sounds. When little ones learn word families they learn numerous words...

In this video, Sap takes a nap, your little ones will learn to read CVC words ending in 'ap'. Help your little one learn to read by using their knowledge of letter sounds. When little ones learn word families they learn numerous words...

A gerund is a type of verbal that has the form of a verb but acts as a noun. In fact, because a gerund looks identical to the present participle some grammarians refer to it as the gerund-participle. This is because both the gerund and...

In this video Paul Andersen describes the new AP Biology Exam. This exam will be given for the first time in May of 2013 and will be different from all previous exams. In this video Paul Andersen describes the scoring and the two parts...

In this video Paul Andersen explains how scientific theories are created and modified over time. He starts by discussing the theory of natural selection as a model for the creation and modification of theories. He gives examples of...

In which John Green teaches you about the Bronze Age civilization in what we today call the middle east, and how the vast, interconnected civilization that encompassed Egypt, The Levant, and Mesopotamia came to an end. What's that you...

Attention all AP Economics students! Here is your chance to win $200. Rewrite the lyrics of a popular song to include economic concepts and create a music video. Choose a specific topic, unit, or the course in general. Deadline- March...

Mr. Andersen gives a brief description of osmosis. He explains how water moves from a hypotonic to a hypertonic solution across a semipermeable membrane. The video ends with a time-lapse demon in class.

You may have noticed that the internet is terrible at religious discourse. Well, this is not a new phenomenon. In the early 16th century, the Roman Catholic church dominated Christianity in Europe, and the institution was starting to...

In this video Paul Andersen explains how covalent network solids form elementally (like graphite) or by combining multiple nonmetals (like quartz). Covalent network solids contain elements from the carbon group because they have four...

In this video Paul Andersen explains how waves interact with objects and with other waves. When a wave hits a fixed object it will be reflected and inverted. When a wave hits a free object it will be reflected without being inverted. ...

In this video Paul Andersen explains how the wavelength of a standing wave is determined by the boundary length and frequency of the wave. The fundamental frequency has a wavelength double the boundary length. Harmonics are built on...

In this video Paul Andersen explains how the vector sum of forces can be used to identify the net force on an object. The net force can be used to determine the overall acceleration of the object using Newton's Second Law.

Whether you're working on an EPQ project at Secondary School, preparing for your undergraduate dissertation, or submitting work to an academic journal, you'll need to know how to write a research report. This video is a how to writing a...

My favorite example of how odd Cuneiform became as it was passed from civilization to civilization. Thanks, rampant Sumerianization! Cuneiform languages took Sumerian very seriously, even after it was long dead. That’s how Akkadian and...

Also, you’ll have a chance to show what you learned with a bonus quiz.