In the Pacific Northwest, three orcas are pregnant. How do we know that and why is it important?

In this video, Sigrid talks about the different types of two-dimensional shapes and some basic geometry.

Are you ready to think fast again? You've got this! You get four seconds to come up with each answer. Then repeat the video to make sure you really know all the words!

Sigrid describes an object and gives you about 4 seconds to come up with the name of the object. Then she gives you the answer. Watch the video twice to see if you can come up with the answer on your own.

Do you know how to say the colors in English? What is the difference between a primary and secondary color? Learn all about them with Luana.

Let Sigrid tell you about the solar system that resolves around the Sun, including the order and characteristics of the planets within it. What is the closest planet to the Sun? What are the smallest and largest planets?

In this lesson, we'll talk about the weather in the future. One way to express the future is with "going to": "It's going to rain." The second way is with "will": "It will rain." You will hear both in this video, so keep your eyes and ears open!

This time, let's talk about the weather in the past using nouns, verbs, and adjectives. If we use the past tense, we can talk about yesterday, last week, last month, or even last year.

There's more than one way to talk about the weather. In part 1 of this lesson, we talk about it in the present. We use nouns, verbs, and adjectives to describe the weather.

When we talk about traffic, it's not only about cars and trucks. We can talk about people on bicycles or on foot, too. They have some special rules to follow, especially in the city.

Many of us have to deal with traffic on a daily basis. Here's how to talk about it in English, include expressions such as "traffic jam," "bumper-to-bumper," and "bottleneck."

Sigrid looks at the regular and irregular verbs in part one of her rendition of The Ugly Duckling. As you listen, you can pause whenever necessary in order to practice the pronunciation of the conjugated verbs.

We have a look inside the story of The Ugly Duckling to see how the verbs work. First on the list is the past continuous tense.

What does the queen do when she leaves the room? Is the girl a real princess or not? Let's find out.

This famous fairy tale is far removed from modern life, but lessons can be learned from it nonetheless. Stories like these are great for practicing regular and irregular verbs.