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¿Cuánta agua hay en nuestro planeta?
Earth's Natural Resources Unit | Lesson 1 of 4

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¿Cuánta agua hay en nuestro planeta?

Earth's Natural Resources Unit | Lesson 1 of 4
Lesson narration:
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CONVERSEMOS (1 de 2):

Imagínate que quedas a la deriva en un barco en el mar sin nada ¿Qué problemas tendrías? ¿Qué necesitarías para poder sobrevivir?

CONVERSEMOS (2 de 2):

Me imagino que se te ocurrieron muchos ejemplos de problemas que surgirían. Por ejemplo, has de haber pesando que necesitarías comida para poder sobrevivir. ¿Pero pensaste sobre el agua que bebes? ¿Acaso el agua sería un problema? ¿Por qué sí o por qué no?

CONVERSEMOS (1 de 2):

Haz una lista de todas las maneras en las que tu y tu familia utilizan el agua. Imagínate cómo sería tu vida si no tuvieras agua. ¿Cómo cambiaría tu vida?

CONVERSEMOS (2 de 2):

¿Cuánta agua crees que tu familia usa en un solo día?

CONVERSEMOS (1 de 2): Haz una suposición

¿Crees que la cantidad de agua dulce en la Tierra es igual a la cantidad de agua salada? ¿O crees que hay más de un tipo de agua? Si sí crees que hay cantidades diferentes, ¿cuánta más crees que hay? ¿Lo doble? ¿Cinco veces la cantidad del otro tipo? ¿U otra cantidad?

Acuérdate de tu suposición. Hablaremos de esto más adelante.

CONVERSEMOS (2 de 2):

¿Crees que hay alguna manera de averiguar que parte de la Tierra está cubierta de agua salada y cuánta está cubierta de agua dulce?

Paso
01/18
Encuentra un compañero o compañera con quien trabajar.
Paso
02/18
Obtén estos materiales.
Paso
03/18
Mira tu mapa. Usa la leyenda en la página para encontrar zonas
de agua dulce, agua dulce congelada, agua salada y de tierra.
¿Tienes los cuatro tipos de agua en tu mapa?
Paso
04/18
¿Se te ocurre un truco matemático que puedas usar para
contar con rapidez? Platica con tu compañero/a.
Paso
05/18
Este es el truco que usamos aquí en Mystery Science. Después de
verlo, contesta las preguntas 1, 2, y 3.

Si necesitas hacer una pausa...

If you need a natural stopping point!

Mensaje para los maestros y las maestras: Teachers: If you are short on time, this is a good stopping point. Your students can make their graph in a future session.

Si vas a continuar la actividad, ve a la siguiente página.

Paso
06/18
Utilizaremos calcomanías para hacer una gráfica de barras.
Conversemos:
Paso
07/18
A nosotros se nos ocurrió esto. Decidimos que cada calcomanía
representa 50 cuadritos de agua.
Paso
08/18
Contesta las preguntas número cuatro, cinco y seis para
determinar cuántas calcomanías vas a necesitar para cada tipo
de agua.
Paso
09/18
Mira la pregunta número cuatro en tu hoja de trabajo. ¿Obtuviste
el mismo número que Pat?
Paso
10/18
Haz que alguien, que haya contado cada mapa, vaya a la gráfica
y ponga el número correcto de calcomanías en la categoría de
agua salada.
Paso
11/18
¿Te faltan los cuadritos de agua salada de algún mapa? Agrega
las calcomanías necesarias para esos mapas también.
Paso
12/18
Voy a sumar los restantes para que puedas descifrar el número
de calcomanías que tienes que agregar. Pongan estas calcomanías
en la gráfica.
Paso
13/18
Mira la pregunta #5 en tu hoja de trabajo. ¿Tu respuesta coincide
con la de Pat? Pon las calcomanías para cada mapa. Maestro:
coloque calcomanías para los mapas que faltan.
Paso
14/18
Voy a sumar todos los números restantes para que sepas
cuántas calcomanías más agregar. Que alguien agregue
estas calcomanías a la gráfica.
Paso
15/18
Veamos la pregunta número seis. ¿Tienes suficientes cuadritos
para poner una calcomanía en la gráfica que represente la
cantidad de agua dulce? Levanta la mano si los tienes.
Paso
16/18
Aquí están los cuadritos de agua dulce que contó Pat. Súmalos.
¿Tienes suficientes cuadritos para poner una calcomanía?
Paso
17/18
Estimamos que los lagos y ríos pequeños en el mundo ocupan
al menos nueve cuadrados de agua dulce.
Paso
18/18
Conversemos, y luego haz clic en la flecha a la derecha
para ver el último video.
Slide Image
Slide Image

agua salada


1 de 11

agua que contiene mucha sal, como el océano
Slide Image

agua dulce


2 de 11

agua que no es salada; por ejemplo, el agua en la mayoría de los lagos y ríos
Slide Image

lago


3 de 11

un área grande de agua rodeada de tierra por todos lados
Slide Image

océano


4 de 11

un área de agua salada en la Tierra
Slide Image

casquete glaciar


5 de 11

un área grande de agua congelada en la superficie de la Tierra
Slide Image

hidrosfera


6 de 11

toda el agua (sólida, líquida, y gaseosa) en y alrededor del planeta Tierra
Slide Image

datos


7 de 11

medidas u observaciones que han sido anotadas
Slide Image

gráfica


8 de 11

una imagen que nos ayuda a entender cierta información
Slide Image

estimación


9 de 11

una conjetura bien fundada sobre un número
Slide Image

área


10 de 11

medida de la superficie de algo

volumen


11 de 11

el espacio que ocupa una cosa
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goldfish in fishbowl by Image used under license from Shutterstock.com: r.classen
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video of vast ocean by OG Pyro
salt and salt shaker by Image used under license from Shutterstock.com: Yulia Furman
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irrigation of farmland by Image used under license from Shutterstock.com: Rudy Umans
gray map of the united states by Image used under license from Shutterstock.com: Miceking
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buckets of water by Image used under license from Shutterstock.com: Sutichak
crystal geiser bottle by Webstaurant Store , used under Public Domain
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faucet by Image used under license from Shutterstock.com: ILYA AKINSHIN
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running faucet by Image used under license from Shutterstock.com: Saran Jantraurai
blurry man holding umbrella by Image used under license from Shutterstock.com: CHOKCHAI POOMICHAIYA
grand teton national park by Image used under license from Shutterstock.com: Pung
icebergs by Image used under license from Shutterstock.com: leospek

Featured Reviews

“This is a wonderful lesson. It took minimal preparation for a fabulous, meaningful and scientifically logical approach to such an important, global topic. The learners took away a deeper sense of responsibility in their use of fresh water. Partner work was optional. The stronger students tend to prefer independent work, so I gave them the additional maps, and let the partners check each others' counting. Great lesson. ”
“My students loved the math activity. I was worried that it wouldn't be engaging enough, and almost every single one asked if they could do more than one piece! They also loved that it connected to our unit on area and that it also had division. I really appreciated the standards based math application. ”
“My students liked it and creating the graph was a great visual for my students to see how important it is for us to work together in keeping our fresh water clean and not wasting it. I especially liked all the mathematics that are incorporated into the Mystery.”
“Once again, Mystery Science has created an amazingly simple, yet powerful way for the kids to see what we are learning about. The post-it note graph stayed up for days because they were so excited about it. We showed everyone who came in our home.”
“I love how engaging the video is, and how easy the lesson plan is to follow. Since it was the first lesson I have done from Mystery Science, I wasn't sure how much preparation I would need. The activity instructions were very easy to follow. My students enjoyed this lesson!”
“Everything was excellent. From the video introduction, which was immediately engaging for the kids, to the printable worksheets it was an enjoyable activity that got all the kids thinking and learning!”
“The students really loved seeing the end result of the graph! I loved how it incorporated 5th grade math standards and I was able to expand the math portion and skip our math curriculum for the day!”
“Prep was extremely easy. Students were very engaged. Their predictions about how much fresh/salt water is present on Earth were totally off, so they learned a big lesson. We're looking forward to the next mystery.”
“My students always learn alot with this activity and appreciate nature more. ”
“Fun and interesting lesson. The graph really put things into perspective!”
“The best part was seeing the students make the connection between the trick to counting the squares quickly and the formula for finding area. The graph they made was a great visual for pointing out just how little fresh water is available and the need to protect the fresh water along with the need to discover ways to make use of the salt water. As always the hands-on learning is "fantastically fun."”
“I loved seeing the students visually graphing the results! Having each student count part of the Earth made students feel more needed and accountable in the activity. My students were fully engaged!”
“Videos were engaging and very interesting and the step by step format to complete the activity was easy to follow and enjoyable. Students got great experience predicting, estimating, graphing, and discussing.”
“I used this lesson for a 4th grade science in MS. Our standards do not follow NGSS very closely. I specifically like how Mystery 1 relates math and science: find the area of salt water and fresh water, and build a graph. ”
“The students realized the value of the fresh water they take for granted each day. It led to some thoughtful discussions of daily water usage. Thanks for making the learning fun and full of impact!”
“I loved the hands on part of the activity. It was really engaging for students and incorporated math skills.”
“The kids loved the How much water is in the world. I appreciate that it also covered the math standard of area. Another note is that the commentator speaks at a nice slow pace which is helpful for second language learners. Excellent program!”
“I think the kids most enjoyed seeing the difference in salt and fresh water, and then the discussion about volume vs. area.”
“Eyes wide open and jaws dropping at the end of the graphing section!”
“This was a blast. The kids loved how it challenged their math and larger 'thinking skills' while also teaching about Science and the world. It was awesome. You guys rule.”
“It was a great visual and the students were very surprised to see the amount of salt water on the graph we made. I appreciate the math computations that were used to make this a successful activity!”
“The best part of this lesson was the application of math in science. Great way to incorporate area, division, multiplication, and other math skills. The visual of the results is very powerful. ”
“I love the graphing and the math involved! The end graph was shocking to look at and analyze. ”
“Thanks for all the resources that make scientific investigations so easy!”
“The kids loved it. They were very surprised at the amount of fresh water in the world compared to salt. ”
“Fantastic lesson. Kids were fully engaged in this lesson.”
“Integrating mathematics and science, environmental awareness and stewardship. The calculations using rectangles help. Division support was also needed, but as whole group, debriefing works.”
“The best part was incorporating our math lesson on area into the activity. The kids were so excited about the outcome of the maps. ”
Lesson narration:

Grade 4

Earth's Natural Resources

Hydrosphere & Water Distribution

5-ESS2-2

Activity Prep

Print Prep
In this lesson, students use estimation and graphing to discover the surprising difference in the amounts of fresh and salt water on Earth. In the activity, Map the World's Water, students count squares on maps and record the amount of fresh, frozen, and salt water found in their assigned area of the world. Then students calculate and graph how much of each type of water is present on the planet.
Preview activity

Exploration

25 mins

Wrap-Up

5 mins

Grade 4

Earth's Natural Resources

Hydrosphere & Water Distribution

5-ESS2-2

Slow internet or video problems?
 
Natural Resources Tx Lesson 1: How much water is in the world?

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