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¿Por qué crecen tan altos los árboles?
Plant Adventures Unit | Lesson 3 of 4

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¿Por qué crecen tan altos los árboles?

Plant Adventures Unit | Lesson 3 of 4
Lesson narration:
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Haz una predicción:

Después de dos semanas, ¿qué crees que le pasará a la semilla que está en la oscuridad comparada con la que tiene acceso a luz solar?

Platica con alguien que esté cerca de ti. Cuéntale tu predicción y por qué crees que eso sucederá.

Conversemos: ¿Cómo pudo haber crecido más la planta que estaba en la oscuridad? Observa a las dos plantas para ver si puedes encontrar alguna pista.

Conversemos:

¿Por qué crees que se mueven las hojas?

plantsmoving

Conversemos:

¿Cómo puede obtener más luz solar un árbol cuando hay muchos otros árboles que le estorban?

Conversemos:

Ahora, ¿si alguien te preguntara, «¿Por qué crecen tan altos los árboles?», cómo responderías?

Paso
01/15
Obtén estos materiales para empezar. (Recibirás otros más adelante).
Paso
02/15
Dobla un lado de la toalla de papel 2 pulgadas. Luego, dóblala
toda como una tira, de esta manera.
Paso
03/15
Envuelve la tira alrededor del palo de paleta. Luego, ponle una
liga alrededor, de esta manera.
Paso
04/15
Usa la otra toalla de papel para cubrir el rollo que hiciste.
Deténlo con otra liga.
Paso
05/15
Dibuja una cara graciosa.
Paso
06/15
Obtén los últimos materiales.
Paso
07/15
Mete la Cabeza de Pasto en el vaso con agua y, antes de sacarla,
déjala escurrir en el vaso.
Paso
08/15
Pon la Cabeza de Pasto mojada en las semillas. Asegúrate de que
haya semillas en cualquier parte que quieras que le salga pelo.
Paso
09/15
El siguiente paso es un poco difícil, así que hazlo con la ayuda de
la persona que esté a tu lado.
Paso
10/15
Ve todo el video de este paso antes de intentarlo. Abre el calcetín
de esta manera y tu compañero meterá la Cabeza de Pasto dentro
del calcetín. Lo detendrás con una liga.
Paso
11/15
En un minuto, tendrás que tomar una decisión. Mientras crece tu
Cabeza de Pasto, puede estar en una de estas tres posiciones:
Paso
12/15
Haz algunas predicciones con tus compañeros y compañeras.
¿En qué dirección creen que crecerá el cabello de la Cabeza de Pasto?
Paso
13/15
Escoge una posición para tu Cabeza de Pasto. Luego llena la parte
de arriba de tu hoja de trabajo.
Paso
14/15
Si quieres que tu Cabeza de Pasto esté parada, ponla en una taza.
Para dejarla acostada, ponla sobre un plato desechable.
Paso
15/15
Ahora tu maestro o maestra les dará agua y las pondrá en una
ventana soleada.
🎉 That’s it for this lesson! How did it go?
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Exploration
4 leaves by Vinayaraj
Forest by OSU Special Collections & Archives
Tree trunk by Tomwsulcer
Trees and sunset by Steve Partridge
Dead sprout by Imgur
Huge tree trunk by Allie_Caulfield
Looking up at tree leaves by David Patte/U.S. Fish and Wildlife
Plant growing in cup by Kirsty
Tree and sunlight by FotoDutch
Few patches of sunlight by Joshua Mayer
Looking up at trees by Rowan, Dick, Photographer
Spiral leaves by Just chaos
Canopy by Phil P Harris.
Ferns in forest by National Park Service
Tree soared into sky by Bradluke22
hole in box by Harris Sisters (Donna)
Dinosaur by LadyofHats
plant in box by Kathy J
Sun shining through trees by Richs5812
dark forest floor by Jim Barton
seeds in a cup by Kirsty
Beans in dark box by Imgur
Light/dark growth by Kirsty
Seed sprouts in cup by Kirsty
sun flowers by ajgarrison3
Calendar by Imgur
Leaves by Hana Kirana

Featured Reviews

“The kids were really excited to make their grass heads, and it was especially cool to hear them make connections from the seed viewer lesson to this one. ”
“We are waiting for them to grow. The surprise that the plant without light grew taller than the others for awhile stumped everyone. Then the "light" went on and they realized it was trying to find light.”
“We have been loving watch our grass heads sprout! My students have become so confident in making observations because of these hands on activities! ”
“It worked much better than last year because we really used a lot of paper towels. Our grass heads were bigger and the grass was healthier.”
“Love the sped up part that shows the plants moving toward the sunlight and how the roots always can find the way to grow downward.”
“My students enjoyed this activity. We had to discuss that patience is REQUIRED in this activity for it to come together since they had to work with their partners. Also, immediate results will not happen. When they heard that it may take up to two weeks, you could hear the sighs. LOL”
“ The students loved making the grassheads. They clearly understood that trees grow tall to get the sunlight! ”
“The Grass heads look pretty hilarious. We were able to buy disposable nylons (the footies you get at shoe stores) and they worked great! ”
“The exploration had a lot of great information. The students had great discussions. The steps for the activity were simple and easy for my group of second graders to follow. The students loved it!”
“Great to get a reminder email to water the grass heads before the weekend. ”
“Once again, the excellent videos and the opportunities for students to share and discuss their predictions made it fast-paced and engaging.”
“Grass Heads were a big hit!!!”
“Fabulous lessons!! I love it so much! These are the best science lessons. The kids stay engaged and even I am learning so much. I also love the activities.”
“The best part was that the students did not actually guess the solution to what would happen to the plants in the dark, or why; so they were rapt to find out! For the activity, the excitement over Grass Head was palpable. ”
“They loved seeing how the bean sprout grew towards the sun. We haven't yet done the grasshead, but after spring break we will do that. They can't wait. I loved getting the email reminder to water them...very helpful (even though he hadn't done it yet, I loved the thought).”
“Love it! I'm trying to find funding for next year!”
“We learn something new with each of these lessons. The explorations are very clear and thorough, and the activities are great, too!”
“My kids loved watching the plants move to follow the sun/light source in the sped up videos. They thought the plants looked like they were dancing!”
“The video and questions were so engaging. We loved discussing what we thought would happen and were delighted to see what actually happen--and discuss that as well. Very well thought out lesson! Thank you!”
“It was fantastic!”
“My students really enjoyed making the grassheads. Science can indeed be fun!”
“The kids absolutely loved making their grass heads and watching them grow. I loved how they were able to meet the lesson's objective.”
“The grass head was fantastic!! We also loved watching the forest in a year video in the extra section. These lessons have inspired my daughter to start growing her own plants. The bean we germinated in the root viewer weeks ago has now been transplanted into a larger pot and is thriving. She even wanted to visit a nursery and was asking all kinds of questions to the employee and now we know even more about the specific plants we are growing, especially her granny apple seed tree that she also germinated in the root viewer and now is in a big pot as well. We have learned the best kind of minerals to feed the plants for the best results. I am convinced that none of this learning would have happened if it wouldn't have been for your mysteries. Thanks again!!”
“Students LOVE seeing the fast motion camera of the plants moving toward the sun! Your program is AWESOME!!!!”
“Great video! Kids learned a lot! Immediately the kids started noticing the trees around us and how they grow differently because of their need for sun!”
Lesson narration:

Grade 2

Plant Adaptations

Light, Leaves, & Competition

2-LS2-1

Activity Prep

Print Prep
In this lesson, students will learn the importance of sunlight to plants, which is collected by their leaves. In the activity, Grass Head, students make a person out of a paper towel and a popsicle stick with grass for hair! Then, students make predictions about the direction that the grass will grow based on the orientation (standing up or lying down) that they place the Grass Head.
Preview activity

Exploration

25 mins

Grade 2

Plant Adaptations

Light, Leaves, & Competition

2-LS2-1

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Plants Lesson 3: Why do trees grow so tall?

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