¿Cómo podrías ganarle a los adultos en un juego de tirar la cuerda?

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¿Cómo podrías ganarle a los adultos en un juego de tirar la cuerda?
Lesson narration:
English Spanish
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CONVERSEMOS: Tug of War

¿Se te ocurre alguna manera de que el equipo de estudiantes pueda ganar? ¿Acaso hay algo que podemos hacer para que sea más difícil para los adultos jalar la cuerda?

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CONVERSEMOS:

¿Existe alguna manera para evitar que los adultos puedan presionar contra el suelo? Para cualquier idea que se te ocurra, explica por qué crees que tu idea funcionaría.

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PRACTIQUEMOS: Piensa en cada una de estas acciones. Para cada una, hazte esta pregunta: ¿es un empujón o un jalón? (Encontrarás las respuestas en la siguiente página.)

apretar
pellizcar
tirar
golpear
arrastrar
levantar


¿Se te ocurren algunos otros verbos que tengan que ver con un empujón o un jalón?

apretar = empujón
pellizcar = empujón
tirar = jalón
golpear = empujón
arrastrar = jalón
levantar = Depende de cómo levantes el objeto. Puedes empujar algo para moverlo o también puedes jalarlo.
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CONVERSEMOS: ¿Cómo podrías usar ligas para hacer explotar una sandía?

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Información para los maestros y maestras

The next slide features an Activity Video where students learn how to make "Hopper Poppers."

Constructing the hopper takes students about 20-25 minutes. Practicing using their hopper and then completing the "High Hop Score Card" takes an additional 20 minutes.

If your time is limited, there is a natural stopping point after Step 6. Have students write their names on materials, then collect them and resume the activity next science class.

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Paso
01/17
Obtén estos materiales.
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Paso
02/17
Utilizando una regla, dibuja líneas diagonales de esquina a esquina, así, creando una X.
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Paso
03/17
Pon tu cartón sobre el rectángulo en tu hoja de trabajo (en donde
dice "Constrúyelo").
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Paso
04/17
Usando la regla, dibuja líneas para conectar A con A, B con B
y C con C, de esta manera.
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Paso
05/17
En cada esquina del cartón, las líneas crean un triángulo.
Recorta esos triángulos.
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Paso
06/17
Usando tu regla, remarca la línea de en medio con tu lápiz varias
veces. Después, dóblala a la mitad.
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Paso
07/17
Agarra una liga. Ponla alrededor de la parte doblada del cartón, así.
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Paso
08/17
Para hacer esto más divertido, haz un dibujo rápido de un
animal que salta en tu Brinca Brinca.
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Paso
09/17
Encuentra un compañero o una compañera con quien trabajar.
Decidan quién será el Centro de Control y quién será el Lanzador.
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Paso
10/17
Pon la plataforma de lanzamiento en la mesa y ponte los anteojos
de seguridad, si los tienes.
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Paso
11/17
Centro de Control: agarra los lados y sepáralos para que el
Brinca Brinca esté plano sobre la plataforma de lanzamiento.
Lanzador: deténlo con la regla.
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Paso
12/17
Centro de Control: Contemos juntos: 3-2-1-¡Despegue!
Lanzador: Cuando escuches la palabra «despegue» quita la regla.
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Paso
13/17
¿Cómo les fue? Requiere práctica soltar al Brinca Brinca de la
manera correcta, así que inténtalo de nuevo.
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Paso
14/17
Cambien de responsabilidades y practiquen dos veces más,
para que las dos personas tengan una oportunidad de hacerlo.
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Paso
15a/17
Plática sobre estas preguntas con tus compañeros y compañeras.
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Paso
15b/17
Esto es lo que nosotros pensamos:
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Paso
16a/17
Plática sobre estas preguntas con tus compañeros y compañeras.
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Paso
16b/17
Esto es lo que nosotros pensamos:
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Paso
17/17
Ahora llena tu Tarjeta de Resultados Para el Brinco Más Alto.
Primero verás qué tan alto puede saltar y llenarás la gráfica.
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Slide Image
Slide Image

jalar


1 de 5

mover un objeto hacia ti
Slide Image

empujar


2 de 5

alejar un objeto de ti
Slide Image

fuerza


3 de 5

algo que jala o empuja
Slide Image

fuerzas balanceadas


4 de 5

dos fuerzas iguales que jalan o empujan en direcciones opuestas, lo que resulta en que un objeto no se mueva

fuerzas desequilibradas


5 de 5

tdos fuerzas que jalan y empujan en direcciones opuestas y ya que una fuerza es más grande que la otra, el objeto se mueve
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Image & Video Credits

Mystery Science respects the intellectual property rights of the owners of visual assets. We make every effort to use images and videos under appropriate licenses from the owner or by reaching out to the owner to get explicit permission. If you are the owner of a visual and believe we are using it without permission, please contact us—we will reply promptly and make things right.

Exploration
watermelon by Mike Mozart , used under CC BY
kids playing tug-of-war by Image used under license from Shutterstock.com: Luis Louro
tug of war European championship by Tug of War Association
Olympic weightlifter by Simon Q
Soldiers playing tug of war by SFC Victor Aguirre
Marine playing a tug of war by Cpl. Matthew Callahan
teacher by Image used under license from Shutterstock.com: wavebreakmedia
Student teacher Tug-O-War by pittcaleb
roller skating elephant by Carol Buckley
push by Mark Doliner , used under CC BY
dough stretching by Joe Hall , used under CC BY
roller skates by Image used under license from Shutterstock.com: Julenochek
dog tug o' war by kellinahandbasket , used under CC BY
pile of watermelons by Mike Mozart , used under CC BY
half watermelon by The Chic Life
slow motion watermelon video by The Slow Mo Guys , used under CC BY
Credits

Featured Reviews

“The students were accurately using the terms "force", "push" and "pull" and they continued through their day--I love the way the lessons stay with kids and inform their understanding of scientific concepts. ”
· Shari · Teacher
“The video clips were terrific to get students thinking, and the time to pause and come up with ideas was helpful. The activity was a huge hit with my students and they were easily able to tell how the force worked and how they could change the force to make it go higher.”
· Kathryn · Teacher
“The kids had a blast and learned a lot. I loved the opportunity for discourse! I took pictures and videos to share with the parents on our class site. I loved how user friendly this was for the teacher too!”
· Jennifer · Teacher
“The video showing how many rubber bands it took to burst the watermelon was the best part of this lesson. The students had great conversation and were also intrigued by the reaction of the rubber bands, as the watermelon burst open. ”
· Theresa · Teacher
“The Hopper Poppers were a great hit. Doug's questions sparked their inner-scientist and the lesson went well. They had lots of good ideas and strategies to make then jump higher. We all had lots of fun. Thanks Mystery Science. ”
· Karen · Admin
“The students wanted to play our own game of tug of war after watching the lesson! And they LOVED it! The conversations they had around how we could make the game easier or more difficult were awesome. Thanks for the fun lesson!”
· Kristen · Teacher
“The best part was the student engagement. I also loved (as a teacher) having the step by step instruction. It really helped me fit Science into my other reading/math times and integrate it easier because of it's simple layout and great instructional videos. Saved me time!”
· Sarah · Teacher
“My students really understand about pushes and pulls equaling force. They absolutely loved launching their hopper poppers and were so enthusiastic about ideas to improve them. ”
· · Teacher
“We really enjoyed making the hopper activity and launching them. This was super-easy to do with a cereal box, a paper cutter, pencil, and ruler-- materials readily on hand at home. We used a paper cutter, rather than scissors, to make sure that we cut along the precise measurements to make our hoppers. Our favorite part was the tug-of-war demonstration and watching the extra tug-of-war video at the end. Not only were these fun, but Mystery Science did a fabulous job of explaining the physics behind winning tug-of-war. Great job! ”
· Karen · Homeschooler
“This lesson went great! Instruction was heavily student driven! The students were extremely engaged and begging to do science all day! They made awesome observations and connections!”
· Katie · Teacher
“they loved the hoppers! Several students went home and made different sizes and used different rubber band sizes, variables to see which hopper hopped the highest. They did a demonstration for the class sharing the findings. Mystery Science is the best!!!!!!!!!!!!!!!!”
· Jean · Teacher
“I thought it would be difficult to use, but everything went so smoothly. ”
· Cinda · Teacher
“The videos and explanations really show my third graders the science behind the activity. They really understand it!”
· Luanne · Teacher
“From a teaching point of view, this lesson had all the parts you would expect in the best you could prepare. The students loved the hands on part and could not wait to take home the hopper and share with family! I look forward to presenting another.”
· Yvonne · Teacher
Lesson narration:
English Spanish

Activity Prep

Print Prep
In this lesson, students will see that by learning to think about pushes and pulls — forces — they can accomplish extraordinary things! In the activity, Hopper Popper, students make a folded piece of cardboard jump high in the air, propelled by the pulling force of a rubber band. They discuss the forces involved in making this “Hopper Popper” jump.
Preview activity

I have a Mystery Pack

High Hop Scorecard worksheet 1 per student
Hopper Popper Teacher Tips worksheet 1 per class
Launch Pad printout 1 per student
Pen
1 pen per student
Rulers
1 ruler per student
Scissors
1 pair per student
Chipboard
Recycled cereal boxes also work.
Details
18 square inches per student
Rubber Bands (#16)
2 bands per student
Prep Instructions

In this activity, each student will make their own Hopper Popper, but we suggest they work in pairs when they launch their poppers. Homeschool students can work on their own, but may need a partner to help when it comes time to launch their Hopper Popper. Some teachers choose to have students wear safety glasses for this activity since Hopper poppers can hop high!

Prepare the Chipboard

If you want your students to practice measuring, you can have them cut 3” x 6” rectangles from chipboard before you begin this lesson. If you don’t have time for students to measure and cut rectangles, we recommend you cut the chipboard into 3” x 6” rectangles before class. It doesn’t take long if you use a paper cutter.

Supplies for Open-Ended Exploration (Optional)

At the end of the activity, we suggest that students change one variable to see how this affects their Hopper Popper. For this open-ended exploration, you can supply students with extra chipboard, extra rubber bands of different sizes, or extra rubber bands of different thicknesses. The Teacher Tips printout will help you guide students during this open-ended exploration.

Exploration

20 mins

Hands-On Activity

45 mins

Extend this lesson

Vocabulary

Vocabulary

Student slideshow: English | Spanish

Teacher printout: English & Spanish

Unit Readings

Unit Readings

Fishing for Forces

In this reading, students learn about pushes and pulls through the eyes of two kids taking a trip to a lake.


Galloping Gertie

In this reading, students learn the story of "Galloping Gertie," a bridge in Tacoma, WA, that collapsed in 1940.


Scientists Solve a Sticky Problem

In this reading, students learn how thinking about friction helped scientists design a better way to get toothpaste out of the tube.


Hunting for Rocks from Outer Space

In this reading, students learn how to hunt for micrometeorites.


The Biggest Magnet in the World

In this reading, students learn why compasses work.

Video

Video

Online videos: This tug-of-war match shows how important the push of feet against the ground is.

Activity

Activity

Tug-of-war is a great way to give students a feel for forces. You’ll need a sturdy rope, a room with a slick floor, and masking tape. Use masking tape to mark the center of the rope and make a line on the floor.

Discuss with the students how to make two, evenly matched tug-of-war teams. Have the teams play tug-of-war, starting with the center of the rope directly above the line.

Then have a rematch with one simple change: The winning team must take their shoes off and play in their stocking feet. (They’ll feel like teachers on roller skates.)

If students mention friction here, let them know you’ll be exploring that topic fully in a future lesson.

Transcripts

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Credits
 
Forces Lesson 1: How could you win a tug-of-war against a bunch of adults?

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