STAGING
Get a free trial until June 30, 2026!
New members get full access to our science units, hands-on activities, mini-lessons, & more!

New members get a full, free trial through June 2026!
Back > Share
¿Qué hace que los puentes sean tan fuertes?
Invisible Forces Unit | Lesson 2 of 5

Spanish narration on!

Click play to start.

Back > Share

¿Qué hace que los puentes sean tan fuertes?

Invisible Forces Unit | Lesson 2 of 5
Lesson narration:
English Spanish
Scroll for prep
Video trouble?

CONVERSEMOS: ¿Cómo podrías prevenir que un puente como este se hunda? (En la siguiente página, te diremos una de las ideas que se nos ocurrieron).

saggingBoard

Una idea que se nos ocurrió fue: Para prevenir que se hunda el puente, puedes ponerle un pilar o una columna debajo de él.

saggingBoard

Video trouble?

CONVERSEMOS: ¿Los puentes que viste en estos videos te dieron algunas ideas de cómo puedes hacer que tu puente de papel sea fuerte? (Piensa en cómo puedes soportar el peso del puente para que no se hunda).

Video trouble?
Video trouble?
#####Video para los maestros y maestras Teacher Video - Guiding students to make bridges

The next slide is a video of Doug & Pat making different bridge designs. This is designed for the teacher to watch in advance. It will help you support students if they get stuck. (We don't recommend playing this video for the students before they've had a chance to experiment on their own.)

Video trouble?
Slide Image
Slide Image

empujar


1 de 12

alejar un objeto de ti
Slide Image

jalar


2 de 12

mover un objeto hacia ti
Slide Image

fuerza


3 de 12

algo que jala o empuja
Slide Image

fuerzas balanceadas


4 de 12

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

fuerzas desequilibradas


5 de 12

dos fuerzas que jalan y empujan en direcciones opuestas y ya que una fuerza es más grande que la otra, el objeto se mueve
Slide Image

diseñar


6 de 12

hacer un plan sobre cómo crear o hacer algo
Slide Image

ingeniero


7 de 12

una persona que utiliza la ciencia para diseñar soluciones a ciertos problemas
Slide Image

puente de viga


8 de 12

un tipo de puente sobre pilotes gruesos
Slide Image

puente en arco


9 de 12

un puente con un arco curvado en el centro
Slide Image

puente colgante


10 de 12

tipo de puente en la que el peso está sujetado de cuerdas que cuelgan de postes altos
Slide Image

puente en celosía


11 de 12

tipo de puente con soportes triangulares
Slide Image

modelo


12 de 12

una versión de mentiras de algo que los científicos usan cuando la cosa de verdad es algo demasiado grande, pequeño, o complicado para poder usarlo en sus estudios
🎉 That’s it for this lesson! How did it go?
Sign up now for more great lessons!
Sign up

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.

Lesson Image
bridges by Jim Bowen , used under CC BY
Exploration
Kirby Cove by Akos Kokai , used under CC BY
Charles Ellis by Mary Cone/PBS
Celestia software by Celestia , used under CC BY
Golden Gate from space by NASA , used under Public Domain
sleeping on boat by Jeff Mentzer
Golden Gate by James W. Shepp & Daniel B. Shepp , used under Public Domain
under the Golden Gate Bridge by USGS , used under Public Domain
USS Ronald Reagan transits Pearl Harbor by US NAVY Mass Communication Specialist 3rd Class Dylan McCord , used under CC BY
Shady Creek by Ladyheart
Kishwaukee River by IvoShandor , used under CC BY-SA
Bloukrans Bridge by http://niocem.ru/
Brunel's Suspension Bridge by Mark Gee
Lake Pontchartrain by Glenn
full hybrid truck by Walmart Corporate , used under CC BY
Seven Mile Bridge by kwalk628 , used under CC BY-ND
Lake Pontchartrain Causeway by Kari Csaba , used under CC BY-SA
Yanjinhe Arch Bridge by Glabb , used under CC BY-SA
NRG Bridge by Greg Mason Burns , used under CC BY-ND
Stone Bridge by cheriedurbin
Clifton Bridge by Adrian Pingstone , used under Public Domain
Golden Gate Bridge by Unsplash , used under Public Domain
spinning the main cables by Golden Gate Bridge District
hanging the roadway deck by Golden Gate Bridge District
GoldenGateBridge by Rich Niewiroski Jr. , used under CC BY
GoldenGateBridge at night by Ryan J Wilmot , used under CC BY-SA
steel construction by m.sansom
StafsWorcs Meccano Bridge by Sjwells53 , used under CC BY-SA
bridge number 6 by Mfwills , used under CC BY-SA
Healdsburg Memorial Bridge by Nate Botl , used under CC BY-SA
Phila Falls Bridge by Davidt8 , used under Public Domain
Carpenter's Flats Bridge by Mfwills , used under CC BY-SA
sewickley bridge by Robert Strovers
Golden Gate Bridge trusses by Jet Lowe , used under Public Domain
Credits
Lesson narration:
English Spanish

Grade 3

Forces, Motion, & Magnets

Balanced Forces & Engineering

3-5-ETS1-1, 3-5-ETS1-2, 3-5-ETS1-3

17513 reviews

Activity Prep

Print Prep
In this lesson, students will learn about real-life bridge design. In the activity, Paper Bridge Engineering, students will use their knowledge of forces to build a strong bridge that supports as many pennies as possible -- using only paper.
Preview activity

I have a Mystery Pack

Bridge Challenge worksheet 15 copies
Bridge Designer’s Notebook worksheet 30 copies
Building Bridges Teacher Tips worksheet 1 copy
Blank Paper (8.5 x 11")
90 sheets
Hardcover Books
90 books
Rulers
30 rulers
Scissors
30 pairs
Pennies
We recommend having at least 400 pennies on hand for a classroom. Some bridges are VERY strong.
Details
400 coins
Prep Instructions

We suggest students work in pairs. Homeschool students can work on their own.

Prepare With Some Engineering Inspiration

We recommend you watch this video of Doug & Pat from the Mystery Science team modeling how to build and improve a bridge. If your students get stuck, you can use this video for inspiration. Our Teacher Tips printout also provides suggestions for guiding students when they are building bridges.

Exploration

22 mins

Hands-On Activity

30 mins

Grade 3

Forces, Motion, & Magnets

Balanced Forces & Engineering

3-5-ETS1-1, 3-5-ETS1-2, 3-5-ETS1-3

17513 reviews
Slow internet or video problems?
Credits
 
Forces Lesson 2: What makes bridges so strong?

How did the lesson go?
Terrible OK Good Great Terrific!

How can we improve it?

If you'd like our team to reply to you, please Contact Support instead.

Thanks for your feedback! If you have a question or need help, please contact us. Please consider sharing your review:

Sorry the lesson didn’t go well. We read every single review in an effort to improve our Mysteries.

Thanks for letting us know. We’ll wait to ask you for feedback until after you've actually taught it.

Thanks for the feedback! We read every single review in an effort to improve our Mysteries.

Is the video not playing properly?

Please follow these steps:

  1. Very rarely a video will fail to completely load in your browser. Try to reload this page to see if that fixes the problem.
  2. If reloading does not help, try our other video player .
  3. If the video still fails to play, open this video in a new tab and please let us know you’re having trouble. We want to fix this issue for you.

Close

How can we help you?

💡For purchasing info, see our Pricing Page

This episode is locked

This lesson is not included in your limited access.

View pricing

This episode is locked

Your membership is expired. The archive of past Mini Lessons is not included in your limited access.

View pricing