This song from Schoolhouse Rock is to help kids understand about bones. Without bones, we're just blobs. It was written by George Newall and sung by Jack Sheldon.

At the University of Sydney, physicist Derek Muller explores the possibility of an anti-gravity wheel through a series of field tests.

Like the letter "M," "N" is almost singable. Sigrid gives you some tips about some very important words containing the letter "N."

The letter "O" is a tricky vowel, because there are several ways to pronounce it, both when it's single and when it's double!

Annette explains three more colloquial contractions people use in everyday conversation: gotta [got to], gotcha [got you], and dunno [don't know]. She also gives us examples in context.

Most of the time "P" is simply pronounced like a "P," but there are a few cases in which "P" is silent. Sigrid gives us plenty of examples of handy words with "P."

The consonant "Q" is a special letter. We almost never find it without a "U" following it. Sigrid gives us plenty of examples of how it's used.

The letter "R" is difficult to pronounce for lots of people, even native speakers. Sigrid shows us how "R" sounds in different kinds of words.

The letter "S" has a couple of different sounds. It's a very important letter because it's used to form the plural of many nouns as well as the third person singular of verbs.

Fuse School: Learn the basics about the effects of global warming on the environment. Some of the problems global warming may cause are changing climate, extremes of weather, problems for ecosystems, rising sea levels, and ocean acidification.

"T" is for "tricky." Depending on what letters "T" is combined with or next to, it is pronounced differently. Sigrid explains and gives some examples.

"U" is an interesting vowel, and has a few different sounds. It can even sound like the consonant "Y," and combines with other vowels to make new sounds.

"V" is a voiced consonant. "Voice" starts with "V." We make the sound with the upper teeth lightly touching the lower lip, like "F" but with the voice, too. It vibrates. The verb "to vibrate" also starts with "V." That should make it easy to remember.

"W" is a consonant, but it is very vowel-like and is considered a "semi-vowel." "W" is featured in plenty of important words, and it combines with other letters to make some new sounds.

"X" is a special letter in that we often use it by itself. It's useful in a lot of situations. In the middle of a word, however, it can be pronounced in a few different ways.