STANDARDS

CCSS: 4.G.A.1

TEKS: 4.6A

Cool Constellations

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People have made up stories about stars for thousands of years! In fact, most of the constellations get their names from ancient Greek and Roman myths. Constellations are groupings of stars that form a pattern. There are 88 total constellations. The stars that make up each constellation look close together. But most of them are trillions of miles apart. Read on to learn about a few famous constellations you can see from the Northern Hemisphere.

Orion

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Orion


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When to see it:
Fall, winter, and spring evenings

Main stars:
Rigel: Bluish star that is the 7th brightest in the sky
Betelgeuse: Giant, reddish star that is 800 times larger than the sun

Myth:
In Egyptian mythology, Sahu, father of the gods, is represented by Orion and a nearby constellation called Lepus. The main Egyptian gods are said to descend from the three stars of Orion’s belt. Some historians believe that the pyramids of Giza were built to line up with these stars.

1A. What type of angle is angle A?  

1B. Which angle in Orion is an obtuse angle? How do you know? 

Lyra

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Lyra


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When to see it:
Summer evenings

Main stars:
Vega: One of our closest neighbors and 5th brightest star
Epsilon Lyrae: It’s actually four stars that orbit each other. But they look like a single star from Earth!

Myth:
Some cultures see Lyra as a stringed instrument called a lyre. In Chinese mythology, the star Vega is particularly important. It represents a heavenly girl who fell in love with a human boy. When the goddess of heaven forced the girl to return to the sky, the boy followed her. But the angry goddess created the Milky Way galaxy and set it between them, so the two lovers could never meet.

What kind of angle is angle D?

Taurus

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Taurus


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When to see it:
Fall, summer, and spring evenings

Main star:
Aldebaran: Reddish star that is 14th brightest in the sky

Myth:
In many cultures, Taurus represents a bull. Ancient Mesopotamians referenced the constellation in a famous story about a powerful king named Gilgamesh.

In his travels, Gilgamesh insulted the goddess Ishtar. She sent the Bull of Heaven to cause drought and earthquakes. Gilgamesh defeated the Bull and saved his people.


Classify angle E.

Ursa Major

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Ursa Major


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When to see it:
Year-round and all night, highest in the sky during spring evenings

Main star:
Alioth: The brightest star in Ursa Major. Sailors once used it to find their way across the ocean.

Myth:
Many cultures see Ursa Major as a Great Bear. In an Iroquois myth, a party of hunters tracked a giant bear to the end of the world. But the bear leapt into the sky! The hunters followed and continue to chase him to this day. They are represented by the three leftmost stars that look like the bear’s “tail.”

The Big Dipper
This is an asterism, a famous pattern of stars that is part of a constellation.

4A. These supplementary angles in Ursa Major add up to 180°. What is the measurement of angle F?

4B. What kind of angle is it?

Angles in Action
Play a cool math game about creating different kinds of angles.

Slideshow: Angles

Share an instructional slideshow about angles with your students.

Slideshow
Click through this interactive math vocabulary slideshow on angles.

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Ursa Minor

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Slideshow

Math Vocabulary: Angles

Click through this interactive math vocabulary slideshow on angles.

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