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.

"Frosty the Snowman" is a popular seasonal song, written by Walter "Jack" Rollins and Steve Nelson, about a snowman who comes to life and plays with the kids who built him. He knows very well he won't stay alive for long.

This is a public service announcement of the Obama administration on ending sexual assault. President Obama is joined by Vice President Biden, Daniel Craig, Benicio Del Toro, Dulé Hill, Seth Meyers and Steve Carell.

Charlie Brown and Linus have been instructed by Lucy to find a Christmas tree for a play they are going to put on, so they go searching for one.

Sigrid gives a quick explanation of what Yabla is and how the Yabla player works.

Annette sharpens her skydiving skills in a vertical wind tunnel in Slovakia. The wind reaches a speed of 180 kilometers per hour (112 mph).

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.

"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.

Julia and Rachael are young American women living in Berlin. Maggie, a friend of theirs from the United States, is coming for a visit. They are pretty excited about Maggie's arrival.

Australians Kylie Minogue and Nick Cave of the band Nick Cave and the Bad Seeds sing a beautiful but macabre duet about a man who brought his sweetheart to a river and killed her. A 19th century Irish song entitled “Down in the Willow Garden” inspired Cave to write the song.

The three girls are happy to be reunited, and Maggie gets settled into the apartment. She feels lucky to have such good friends.

"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.

The three friends have breakfast together, do some catching up, and muse about the future. Who knows, will they all end up living together in Berlin one day?

"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.