We keep seeing the "Black Lives Matter" slogan all around — what's it all about? Well, it's a long story. Here's part of the story in a nutshell.

Lots of English words can serve as nouns, verbs, or adjectives depending on the context. Sometimes even the pronunciation changes. Let's look at the slogan "Black Lives Matter" in both a grammatical and historical context.

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.

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!

It's time to think fast again! This time it's a little harder, but focus on the words you know or recognize, and you might be able to guess the answer, even if you don't know the exact word in English. If you don't get all the answers, just watch the video again!

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).

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!

In this game, following the description is just as important, if not more important, than guessing the answer in English. Try visualizing what Sigrid is describing. You can also give yourself more time by hitting "pause" while the clock is ticking.

This episode of "Think Fast" is dedicated to the summer and the heat. Try to guess what Sigrid is describing!

Get ready for another round of "Think Fast!" Sigrid will describe some objects and you have to figure out what each object is. Even if you don't know the word for it in English, you are still doing great if you can visualize the object being described.

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 the United States, a presidential inauguration takes place every four years. The US now has a new president, Joe Biden, and Kamala Harris was sworn in as the first woman vice president. Part 1 of this video takes a look at the day before the inauguration.

Inauguration Day was special this year. In this video, Sigrid recalls some of the highlights and what was particularly striking to her as she watched it. Best of all, you can watch Amanda Gorman recite "The Hill We Climb" right here on Yabla!

Sigrid describes her day using verbs in the simple past tense. Each verb will flash on the screen in the past tense with the infinitive in parentheses, just in case you need a little help. There is even a vegetarian pasta recipe included!

Sigrid muses about how much she loves this time of year and time of day where she lives in Italy. If she had one complaint, it would be: too much green!