The Discovery Education 3M Young Scientist Challenge

Gitanjali Rao won the 2017 Discovery Education 3M Young Scientist Challenge.

Read the following words and phrases and their definitions.

• contaminated - dangerously dirty
• lead - a heavy and soft metal that has a gray color; chemical element: Pb
• to detect - to discover or notice something that is hidden
• detection - when you discover or identify something that is hidden
• to dip - to put something into water (or another liquid) and pull it out again quickly
• the whole manual part - the part that you do with your hands
• elevated levels of lead in his blood - more lead in his blood than is normal and healthy

First read the assignment. Next watch the video. Take notes to help you do the assignment.

1. How old is Gitanjali Rao?


2. Gitanjali’s invention is called Tethys. What does Tethys do?


3. What gave Gitanjali the idea to make Tethys?


4. How long did it take Gitanjali to make Tethys?


5. What good advice does Gitanjali give at the end of the video (1:58)?

Extra speaking assignment
Watch the video once more.
1. Listen carefully to Gitanjali’s explanation of Tethys. (0:19 to 0:35)
2. Take notes of the main steps.
3. Explain in your own words how to use Tethys.