How to measure an angle?
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- #2159
- 23 Jul 2024
We use degrees to measure an angle, just like kilograms or pounds measure how heavy something is. Usually, if something is measured in degrees, it will have a little circle after it, for example, "My room has a 90° corner".
We can imagine an angle as a pizza slice. The bigger the pizza slice, the bigger the angle. If we cut the pizza into four pieces, like in the picture above, we get four slices of 90°. 90° angles are called right angles and they are used in many places around you! Where can you find right angles?
If you put two right angles next to each other, you get half a circle or 180°. Add two more right angles, and you get a full circle or 360°!
To understand how small one degree is, imagine you cut the pizza into 360 slices! Each slice will have an angle of 1°.
Courses and lessons with this Tutorial
This Tutorial is used in the following courses and lessons
Level A2 - History and Mythology - Robotics with LEGO SPIKE Prime
This is the second level of the LEGO Robotics Curriculum for second, third, and fourth-grade students.
In this level, we will focus on History and Mythology, with each lesson covering a different aspect of the ancient world. You will learn about a new distance sensor that uses ultrasound to help a watchtower robot detect invaders. We will also introduce new concepts such as loops, degrees, and a third motor. Additionally, you will learn how robots can perform two different tasks simultaneously.
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Lesson 1 - Ancient Boats
Introduction
In this lesson, we will learn how the ancient people managed to use the wind to navigate the seas, and we will build a boat robot!
People have used water for transportation for thousands of years. It was useful when you go downstream on a river or a sea current.
What do you think they did to go upstream?
They needed to use people with oars to fight against the current, which was really tiring and couldn't work for a long distance. So, people invented the first sailboats! They used the power of wind, which allowed them to go further faster, and they didn't need so many people to move them. The first record of a sailboat is a drawing on a vase in Egypt around 5500 years ago. However, sailboats were probably invented a long time before that.
The Phoenicians were the most famous naval people of the ancient Mediterranean world. They used their sailing boats to discover and trade with lands throughout the entire Mediterranean Sea, and even beyond, reaching as far as the British Isles. They became a massive trading empire and invented an alphabet, which was later the basis for the Greek and Latin alphabets we still use today!
Another people who mastered sailing around the same time were the natives of southeast Asia, who managed to sail all around the Pacific Ocean and reach even the furthest islands there.
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