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¿Cómo pueden ver algunos animales en la oscuridad?
Human Machine Unit | Lesson 3 of 4

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¿Cómo pueden ver algunos animales en la oscuridad?

Human Machine Unit | Lesson 3 of 4
Lesson narration:
English Spanish
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CONVERSEMOS:

¿Qué crees que es tan especial sobre los ojos de un animal nocturno que les permite ver tan bien de noche? ¿Tienes alguna idea?

Pista…

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Paso
01/19
Encuentra a alguien con quién trabajar. Decidan primero quién
va a ser el Observador o la Observadora y quién será el Ojo.
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Paso
02/19
Ojo: abre bien los ojos. Observador: mira los ojos de tu compañero
o compañera. Encuentra la parte blanca, la pupila y el iris.
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Paso
03/19
Maestro: comience la cuenta regresiva empezando desde el 20.
y luego diga «¡Abranlos!» Ojo: cierra los ojos hasta que escuches
«ábranlos.» Observador: observa si hay algún cambio en el ojo.
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Paso
04/19
Ojo: cierra los ojos. Observador: prepárate para ver.
Maestro: comience la cuenta regresiva empezando desde el 20.
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Paso
05/19
Cambien de rol y vuélvan a intentarlo.
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Paso
06/19
Platica sobre esta pregunta en tu clase:
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Paso
07/19
Este video muestra un ojo cuando se prende y se apaga la luz.
Obsérvenlo y platiquen sobre esta pregunta.
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Paso
08/19
Llegó la hora de la segunda parte del experimento. Cada persona
necesitará estas cosas:
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Paso
09/19
Colorea el iris. Utiliza el mismo color que usaste en tu primer
modelo de ojos, para que coincidan.
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Paso
10/19
Corta a lo largo de la línea gruesa para recortar la tarjeta de la pupila.
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Paso
11/19
Dobla la tarjeta a la mitad así. Luego corta a lo largo de la línea
punteada. Desdobla la tarjeta.
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Paso
12/19
Maestro: apague las luces. Estudiantes: usen el modelo del ojo
para reflejar una imagen en la retina.
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Paso
13/19
Platica sobre estas preguntas en tu clase:
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Paso
14/19
Decidan quién será el Enfocador y quién será el Controlador
de la Pupila.
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Paso
15/19
Controlador de la pupila: desliza la tarjeta de la pupila en el
bolsillo del ojo, así.
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Paso
16/19
Enfocador: con la tarjeta de la pupila en el lugar correcto,
haz que una imagen clara aparezca en la retina.
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Paso
17/19
Ustedes dos: miren lo que le pasa a la imagen en la retina cuando
el Controlador de la pupila quita la tarjeta. ¿Qué sucede?
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Paso
18/19
Intenta este experimento varias veces. Cambia de rol si lo prefieres.
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Paso
19/19
Platica sobre estas preguntas en tu clase:
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CONVERSEMOS: ¿Por qué crees que estos animales pueden ver mejor que nosotros en la oscuridad?

Eye Comparison

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nocturno


1 de 12

cuando algo está activo durante la noche
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vista


2 de 12

la habilidad de poder ver
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luz


3 de 12

lo que produce el Sol y las lámparas y hace posible que veamos las cosas
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pupila


4 de 12

la abertura oscura en el centro del ojo
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iris


5 de 12

la parte colorida del ojo que tiene forma de dona
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modelo


6 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
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experimento


7 de 12

una prueba que se usa para descubrir más información sobre una pregunta
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retina


8 de 12

la parte trasera del ojo que percibe la luz y transmite mensajes al cerebro
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estructura


9 de 12

la forma específica que tiene una cosa
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función


10 de 12

lo que algo hace
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reflejar


11 de 12

cuando la luz rebota sobre una superficie
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diseccionar


12 of 12

abrir o separar algo para estudiarlo
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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
dilapidated house by Downtowngal , used under CC BY-SA
manhattan by Leifern , used under CC BY-SA
optical illusion by Edgar Mueller , used under CC BY-ND
for rent sign by Bart Everson , used under CC BY-SA
brain by _DJ_ , used under CC BY-SA
flashlight by Stocksnapper
little girl by ANURAK PONGPATIMET
cat dilated pupils by Andreibanc , used under Public Domain
monster flashlight outside by youshoojump
raccoons in cherry tree by AndrewBrownsword , used under CC BY-SA
old woman by beeboys
racoons peaking out by mountainamoeba , used under CC BY
racoons climbing by hobvias sudoneighm , used under CC BY
camping by Zachary Collier , used under CC BY-SA
family by Michael Bentley , used under CC BY-SA
raccoon by Jinterwas , used under CC BY-SA
pizza by The Pizza Review , used under CC BY-SA
cat by ch2daewong
scientist lab computer by Rhoda Baer , used under Public Domain
brains by Prylarer , used under Public Domain
owl by Hector Bottai , used under CC BY-SA
brain background by Simon , used under Public Domain
deer by harrystilianou002
little girl sleeping by Petra , used under Public Domain
sheep brain by Aaron Bornstein , used under CC BY-SA
surgery by skeeze , used under Public Domain
gears by Libertad , used under Public Domain
lightbulb by Greg Westfall , used under CC BY-SA
eyeballs by Patrick J. Lynch , used under CC BY-SA
eyeballs connected to brain by Pete Linforth , used under Public Domain
ambulance by Canuckle , used under CC BY-SA
green eye by Pedramiri , used under CC BY-SA
business cards by Niek Verlaan , used under Public Domain
iPhone by Hurk , used under Public Domain
nervous system by Chris , used under CC BY-SA
old photograph by Michal Jarmoluk , used under Public Domain
Inside Out by Disney / "fair use" ??
light switch by Martin Cathrae , used under CC BY-SA
door by r. nial bradshaw , used under CC BY
cat's eyes by Takuma Kimura , used under CC BY-SA
owl's eyes by Airwolfhound , used under CC BY-SA
rodents eyes by Arjan Haverkamp , used under CC BY-SA
night sky by Hector Bayes M , used under CC BY-SA
moon by lovecatz , used under CC BY-SA
tarsier by JennyHuang , used under CC BY-SA
tarsier in tree by David Evison
gecko by Megan
Crested Gecko pupil response by JB's Cresties
dog in the dark by Rennett Stowe , used under CC BY-SA
deer at night by lovecatz , used under CC BY-SA
cow at night by Clark
cow eye dissection by Project NEURON , used under CC BY
making tape glow on bike by Hyper Spectrum Reflective
masking tape by TapeCase
making tape glow video by Steve Cole
cat by Andrew Gatt , used under CC BY
dog by Thirteen of Clubs , used under CC BY-SA
crocodile by sodai gomi , used under CC BY
face in dark by Natalie 93
photographer by fedi
red-eye effect humans by PeterPan23
red eyes by Mikael Häggström
Activity
racoons by USFWS Mountain-Prarie , used under CC BY
first face by Konstantin Chagin
second face by pathdoc
pupil response by Hasan Sawan
two lizards by Ltshears , used under CC BY-SA
graphic pencil by JohannPoufPouf , used under Public Domain
Other
Unit: black cat, green eyes by LisaRedfern
Credits
Lesson narration:
English Spanish

Grade 4

Human Body, Vision, & The Brain

Structure & Function of Eyes

4-PS4-2, 4-LS1-1

Activity Prep

Print Prep

In this lesson, students delve further into the workings of the eye, exploring the function of their iris and pupil. In the activity, Pupil Card, students add a smaller pupil to the eye model that they created in the previous lesson. Then they observe how the changing size of the pupil controls how much light enters the eye.

Preview activity
Number of students:

I have a Mystery Pack

Pupil Card printout Print 30 copies
Eye Model from Previous Lesson
Students need the eye models that they created in the previous Lesson.
Details
30
Markers
Students should use the same color that they used to color the iris in Lesson 2. Crayons or colored pencils also work.
Details
30 markers
Scissors
30 pairs
Prep Instructions

We suggest students work in pairs. Students need the complete eye model (magnifying lens and the index card “retina”) that they made in the previous lesson. If any students were absent for this activity, you can pair them with someone who has an eye model. Homeschool students can work on their own, but will need a partner for some parts of the activity.

Watch This Quick Video

In the first activity, students will experiment to see how their eyes change in response to changes in the light around them. Watch this video to see the change they are looking for. (You can also watch for this change in your own eyes. Look at your eyes in a mirror in a dark room and watch what happens when you turn on the lights.)

Exploration

7 mins

Hands-On Activity

30 mins

Wrap-Up

8 mins

Grade 4

Human Body, Vision, & The Brain

Structure & Function of Eyes

4-PS4-2, 4-LS1-1

Slow internet or video problems?
Credits