In this video, you'll hear people talk about the past and the present. A man recites his poem, and then we go to a commercial break, where the fictional company Presto seems to have cornered almost every market with its wonder products!

Tommy is worried that nobody came to his baseball game, but it turns out that someone in his family did go. Find out who it was, and learn how to talk about past activities in the past tense!

Elderly couple Harold and Gertrude reminisce about their first date together. Although their memories are a little hazy, they can agree that it was a very special day!

This song teaches about the digit 0, portrayed as a superhero, as well as multiplication by powers of 10. This song was voted the 11th best song on the 30th anniversary edition. Sung and written by Bob Dorough.

In American schools, it's common for kids to have to learn the Preamble to the United States Constitution by heart. This song, from Schoolhouse Rock, is meant to give these kids a hand, even though it is a slightly abridged version.

Bob Dorough wrote and sang this song about the number "three," as a fun way for kids to learn their multiplication tables. It became the pilot episode for Multiplication Rock, the first season of the Schoolhouse Rock TV series.

This song was written and sung by Bob Dorough. It teaches about the multiplication of 5 through a game of hide and seek, in which the seeker counts by fives.

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.

This Schoolhouse Rock video is about interjections, which are used to express emotions. Fun fact: the singer of this song, Essra, also sang on Sesame Street and wrote a number of pop hits by artists such as Cyndi Lauper and Tina Turner.

This up-tempo song from Schoolhouse Rock helps us to understand what a noun is. Generally, it's any person, place, or thing, which the song shows with helpful examples!

Here's how to pronounce a very important noun with an unusual plural!

These three words are so similar, but so different! Check out this lesson, too.

Rachel gives some helpful tips on sounding more like a native speaker when you introduce yourself in English.

Rachel takes us through different ways of pronouncing the "you" in the phrase "Nice to meet you," and introduces us to a new friend of hers.

Richard Williams, better known by his stage name Prince Ea, is an American spoken word artist, poet, rapper, and filmmaker. He formed the "Make 'SMART' Cool" movement in 2009, which is dedicated to promoting the ideals of education, intelligence, unity, and creativity through hip hop.