Let's look at how Long Island was formed around 20,000 years ago. It has to do with a glacier that brought plenty of material along with it and left some behind when it receded.

We're back on Long Island, exploring the North Shore with an outing to a wildlife refuge on one of the necks, or small peninsulas that jut into the Long Island Sound, the body of water separating Long Island from Connecticut.

This last part about the D&R canal talks about the special bridges that were needed to cross the canal and who had to take care of them. And if you're wondering if the canal is still in use, Sigrid answers that question. There's a special tribute at the end of the video for which you might want this link.

What makes canals so special? In part 2, we explore locks. Locks are like elevators for barges and boats!

After exploring the five boroughs of New York City, we move on to Princeton, New Jersey, where Sigrid gets curious about a canal built in the early 19th century.

Try to figure out what Sigrid is thinking of as she describes something. Understanding the description is just as important as guessing the answer.

In part 2 about the borough of Manhattan, Sigrid completes her overview of all 5 boroughs of New York City. She talks about some nicknames for New York City, including "the Big Apple."

We've finally made it to Manhattan, the smallest but most densely populated borough. When we think of New York City, Manhattan is more often than not what comes to mind. This is part 1.

Taking animals for inspiration, Annette focuses on characteristics and techniques that will bring success when it comes to sitting an English examination—in particular the TOEFL (Test Of English as a Foreign Language) exam, one of the best-known standardized English language tests.

Annette welcomes us aboard her narrowboat home for a taste of a uniquely peaceful lifestyle that consists of navigating canals in the heart of the beautiful English countryside.

It's time to have a look at Staten Island, the 4th borough out of 5. It looks closer to New Jersey than to the rest of New York City and has some other peculiarities.

Both the Mississippi River and the Colorado River have a huge impact on the lives of millions of Americans. While there have been severe droughts leading to a lack of drinking water, there have also been floods because of quickly melting snow.

To get from eastern Long Island to the city, travelers and commuters have to go through Queens, so this borough naturally became a very important transit hub, with Jamaica at its center. It also became crisscrossed with many expressways for vehicles.

Having explored the Bronx and Brooklyn, Sigrid now tells us all about Queens, which is geographically speaking the largest of the 5 boroughs of New York City.

Annette has been creating videos for Yabla for a while, and in this video, she shares her story. Yabla became an important part of her life, and inspires her to learn languages in a natural and effective way.