Haven't signed into your Scholastic account before?
Teachers, not yet a subscriber?
Subscribers receive access to the website and print magazine.
You are being redirecting to Scholastic's authentication page...
Announcements & Tutorials
NEW! SuperSTEM Coming Fall 2023
Sharing Google Activities
2 min.
Setting Up Student View
Exploring Your Issue
Using Text to Speech
Join Our Facebook Group!
1 min.
Subscriber Only Resources
Access this article and hundreds more like it with a subscription to DynaMath magazine.
STANDARDS
CCSS: 5.G.B.3, MP3, MP6, MP7
TEKS: 5.5A
Article Options
Presentation View
Lexile® measure
Yo-Yo Pros
People from around the world compete to do the coolest yo-yo tricks
Courtesy of YoyoFactory.com
Betty Gallegos
Betty Gallegos was 12 when she saw her first yo-yo competition in Mexico City. The competitors made shapes with the strings while the yo-yos kept spinning at the end. Gallegos was so amazed, she got a yo-yo after the event. She’s been doing her own tricks ever since.
Betty Gallegos was 12 when she saw her first yo-yo competition in Mexico City. The competitors made shapes with the strings while the yo-yos spun. Gallegos was amazed. She got a yo-yo after the event. She’s been doing her own tricks ever since.
Gallegos is now 20. She’s part of a worldwide community of more than 10,000 competitive yo-yoers. They practice for hours and share tips on YouTube. They show off their tricks at championship events. In August, Gallegos traveled to Cleveland, Ohio, to compete in the World YoYo Contest. She won first place in her division!
Yo-yoers develop a routine of tricks performed to music for each competition. Gallegos starts by picking out a song with a good beat. Then she plans her routine. A routine lasts two or three minutes. She practices up to three hours a day in the months leading up to the competition. She has to be careful not to let the yo-yo stop spinning or to create knots in the string.
Gallegos is now 20. She’s part of a worldwide community of talented yo-yoers. They practice for hours. They share tips on YouTube. They show off their tricks at championship events.
In August, Gallegos traveled to the World YoYo Contest in Cleveland, Ohio. She won first place!
To prepare for competition, yo-yoers develop a routine of tricks. They perform the tricks to music. Gallegos first picks out a song with a good beat. Then she plans her routine. A routine lasts two or three minutes. She practices up to three hours before a competition. She has to be careful not to let the yo-yo stop spinning. She also avoids knotting the string.
Matej Divizna/Getty Images
Judges score a routine on its style, difficulty, and execution. To get the most points, competitors do as many tricks as possible while the yo-yo spins. They have to throw it down again when it starts to slow down.
Gallegos spent all year preparing for the World YoYo Contest. In April, she competed in the Mexican national championship. The crowd cheered as she spun and bounced her pink metal yo-yo. “When they said my name in first place,” she says, “I was the happiest person in the world.”
Judges score a routine on its style, difficulty, and execution. To get the most points, competitors do as many tricks as possible while the yo-yo spins. They throw it down again when it starts to slow down.
How do you think the shapes formed by the strings affect the yo-yoʼs movement during a trick?
What to Do
Triangles can be identified by the length of their sides. They can also be identified by the measures of their angles.
There are six types of triangles:
• Equilateral: All sides are the same length.
• Isosceles: Two sides are the same length.
• Scalene: No sides are the same length.
• Right: One angle is a right angle.
• Acute: All angles are acute.
• Obtuse: One angle is an obtuse angle.
Example
Classify this triangle by its sides and its angles.
• All three sides are the same length.
• All angles have the same measure and are less than 90 degrees.
• The triangle is an acute equilateral triangle.
A yo-yoer does the two-handed star trick. The criss-crossing string makes different triangles. What type of triangle is at the top?
A. right triangle
B. scalene triangle
C. equilateral triangle
D. acute triangle
2A. Use a ruler to classify the triangle outlined in orange by its sides.
2B. By its angles?
A yo-yoer does the ladder escape trick. Classify the triangle on the left by its sides and angles.
In the ladder escape trick, classify the triangle on the right by its sides and angles.
<p>A regular sequence of actions</p>
<p>Polygons with three sides and three angles</p>