Piggeldy and his big brother Frederick are out and about again, discovering and learning about the world. This time they set out to find where the sky begins.

Let's have a look at which countries are members of the European Union and where they are on the map.

Try to guess what word Sigrid is describing using the clues she gives you. Remember: You can always click "pause" if you need more time!

The European Union has been in the news a lot lately, so let's take a look at what it's all about. What is a "union" and what's the purpose of this one?

Central Park lies between the East and West Side of New York City, and today John is there by the frosty waters of the Jackie Kennedy Onassis Reservoir. It’s a popular place for New Yorkers to go jogging, and was once featured in a movie starring Dustin Hoffman.

Abi carefully packs her picnic basket with food and utensils, and is off to the park to set everything up for today’s elegant picnic!

See if you can figure out what Sigrid is describing. Don't worry! She will give you a little time to think and then give you the answer (with some extra information, too).

We tend to associate pizza with Italian culture, but it actually has a long history in the United States. However, its reputation as a cheap meal option may be changing.

In this video lesson, Luana explains the names given in English to our nearest and dearest relations: the brothers, sisters, cousins, parents, uncles and aunts that make up our family tree.

We continue to explore the phenomenon of hurricanes. Why are they so dangerous? And do they serve any purpose?

In recent years, we've seen an increase in the intensity of tropical storms and hurricanes due to global warming. But how and why do hurricanes form? Sigrid provides a basic explanation of this phenomenon.

Sigrid explains how a spelling bee normally proceeds. There are fixed rules and there are options.

Ever year, the winter solstice comes on December 21 in the Northern Hemisphere. Not only is it the first day of winter, it's a turning point, as the days will then get longer.

Sigrid talks about "The Elementary Spelling Book" by Noah Webster, which was the basis for the American English dictionary and a big part of the development of spelling bees in the United States.

Let's find out more about an American activity aimed at school kids: the spelling bee. What is it and how does it work?