¿Cómo viajó un árbol alrededor del mundo?

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¿Cómo viajó un árbol alrededor del mundo?
Lesson narration:
English Spanish
Scroll for prep
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Conversemos:
¿Cómo podría existir el mismo tipo de árbol en dos lugares a miles de millas de distancia y no en ninguna otra parte?
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Conversemos:
¿Cómo pudo haber viajado una semilla de koa desde Hawái hasta La Reunión?
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Conversemos:
¿Cómo afecta la estructura alrededor de la semilla la manera en la que
viaja por el aire?
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Paso
01/18
Vas a trabajar con un compañero o una compañera.
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Paso
02/18
Obtén estos materiales.
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Paso
03/18
Escribe tu nombre en la parte de atrás de tu modelo de arce. Luego,
dobla el punto A hacia el punto B. Cuando termines, debes de haber
cubierto el rectángulo gris,
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Paso
04/18
Dobla el triángulo para que cubra el dibujo de la semilla.
Pon el clip en la parte de abajo de tu semilla.
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Paso
05/18
Corta a lo largo de la línea punteada. Detente cuando llegues a la
señal de alto. Cuando termines este paso, tu modelo de una semilla de
arce tendrá dos solapas.
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Paso
06/18
Dobla la solapa #1 hacia ti, hasta la línea. Dobla la solapa #2 hacia
atrás. Levanta las dos solapas con tus dedos para que queden casi
perpendiculares.
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Paso
07/18
Cuando tu maestra te diga, párate al lado de tu escritorio. Vas a
jugara ser un árbol. Planta los pies en el piso. Párate derecho y
extiende tus brazos.
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Paso
08/18
Agarra tu modelo de arce de un lado usando dos dedos. Deténlo lo
más alto que puedas. Déjalo caer y mira cómo se mueve mientras cae.
Levántalo y vuelve a intentarlo. Tendrás 3 minutos para hacerlo.
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Paso
09/18
Conversemos:
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Paso
10/18
Escribe tu nombre en la parte de atrás de tu modelo. Corta a lo
largo de las dos líneas punteadas y detente en cada alto. Cuando
termines, tendrás dos hendiduras en el papel.
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Paso
11/18
Sujeta las dos orillas de tu tira de papel y haz una U con ellas.
Mete la hendidura de un lado dentro de la otra.
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Paso
12/18
Ahora vas a imaginarte que eres un árbol otra vez. Agarra el
modelo de un árbol de la lluvia con dos dedos de manera que
las puntas estén de lado. Deténlo, déjalo caer, y obsérvalo.
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Paso
13/18
Trabaja con tu compañero/a para dejar caer y comparar tus
dos modelos. Ponle atención a lo que tienen en común y cómo
son diferentes. Tendrás 3 minutos para hacerlo.
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Paso
14/18
Conversemos:
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Paso
15/18
Escribe tu nombre en la parte de atrás de tu modelo de koa.
Dóblalo a la mitad, a lo largo de la línea negra. Remarca el doblez
con tu uña para que quede bien doblado.
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Paso
16/18
Sostén tu modelo de una semilla de koa de un lado usando dos
dedos. Deténlo, déjalo caer, y obsérvalo. Inténtalo varias veces.
Tendrás 3 minutos para hacerlo.
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Paso
17/18
Conversemos:
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Paso
18/18
Conversemos:
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Discuss:
¿Podría el viento transportar una semilla de koa hasta el otro lado
del mundo? ¿Por qué sí o por qué no?
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Conversemos:
¿Qué podría ayudar a una semilla de cereza a moverse de un lugar a otro?
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Conversemos:
¿Qué tipo de animal podría haber cruzado el océano para llegar al otro
lado del mundo con una semilla de koa?
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semilla


1 de 10

la parte de una planta que puede crecer y convertirse en una plantita
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plántula


2 de 10

una planta joven que crece de una semilla
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estructura


3 de 10

la forma específica que tiene una cosa

dispersar


4 de 10

esparcir algo sobre un área grande o moverlo de un lugar a otro
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dispersión por acción del viento


5 de 10

cuando el viento ayuda a esparcir las semillas de una planta (llevándolas de un lugar a otro)
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dispersión por acción del agua


6 de 10

cuando el agua ayuda a esparcir las semillas de una planta (llevándolas de un lugar a otro)
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dispersión por animales


7 de 10

cuando un animal ayuda a esparcir las semillas de una planta (llevándolas de un lugar a otro)
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observar


8 de 10

ponerle mucha atención a algo
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comparar


9 de 10

observar en qué se parecen y cómo son diferentes varias cosas
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modelo


10 de 10

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

Featured Reviews

“The students loved this activity. It was very simple to implement, but again, Mystery Science did a wonderful job teaching the complex concept of seed dispersal. Second graders had a great time thinking through and deducing how the Koa seed actually was dispersed. Some students were very surprised at how animals disperse seeds. Great job Mystery Science Team!”
· Elena · Teacher
“The hands-on seed models were the best part of the lesson!!!!”
· Julie · Teacher
“My class and I loved the making the different types of seeds. Many said this is the best activity of the year! Super engaging! ”
· Jennifer · Teacher
“They loved it! Seed dispersal was so fun and they and I were amazed at how far and different the simple paper seeds moved.”
· Veronica · Teacher
“The videos engage students and the activities are so well defined. They do not cost a lot of money and are enjoyable with great learning and challenge.”
· April · Teacher
“We loved making the seeds and learning how their shape helps them travel. ”
· Shannon · Teacher
“Watching the kids discuss the differences in the seed structure was awesome!”
· Kathryn · Teacher
“Love the updates on this lesson. My students LOVED making and testing the different types of seeds. They were all so engaged. What a great way to learn about seed dispersal!”
· Chrystal · Teacher
“It was age appropriate. Materials were accessible and easy to prepare. The students were highly engaged. They loved experimenting with the paper seeds! The videos were helpful in explaining the directions for the lesson and very informative and kept the students attention. ”
· Rachel · Teacher
“Loved the new cutouts for the seeds, the timers, and the explicit step by step videos including discussion questions for the children! Such easy prep and the kids LOVED it, especially when they became the tree.”
· Kristen · Teacher
“The kids loved the interactive testing part of the activity. The pauses for discussions for this lesson felt perfectly timed and paced, and it led to some really great conversations and critical thinking!”
· Jeanine · Teacher
“The children were really engaged and enjoyed it immensely. the resources were excellent and there was some amazing learning. I particularly like the questioning through out that gave many of the children the ability to stretch and challenge their thinking. Thanks”
· Victoria · Teacher
“This was a terrific hands-on activity! Students were able to complete their models independently and feel successful. It generated a lot of thought and discussion.”
· Julie · Teacher
“Kids loved it. They were very interested in the activity and they were excited to take it home and share with their families.”
· Christina · Teacher
“We loved making the paper models of seeds, and then testing them out!”
· Gina · Teacher
“My kids loved testing out how each seed would fall. The hands-on activity was a hit!”
· Connie · Teacher
“The lesson and activity were fun and engaging. The new visuals and step by step directions are a great improvement!”
· Esther · Teacher
Lesson narration:
English Spanish

Activity Prep

Print Prep
THIS LESSON WAS REVISED ON FEB 1, 2023. Here is a link to the previous version.
In this lesson, students investigate the mystery of the koa tree, a type of tree that grows in only two places—islands halfway across the world from one another. In the activity, students develop three different physical models of seed structures. They observe how structure affects the seed’s function in dispersing away from the tree. Then, they use these observations to evaluate whether koa seeds are likely dispersed by wind, water, or animals.
Preview activity

I have a Mystery Pack

Koa Seed Model printout
Make sure to prep these before class (see instructions below). 		1 per 3 students
Maple Seed Model printout
Make sure to prep these before class (see instructions below). 		1 per 5 students
Rain Tree Seed Model printout
Make sure to prep these before class (see instructions below). 		1 per 6 students
Scissors
1 pair per student
Paper Clips
1 clip per student
Prep Instructions

We suggest students work in pairs. Each student will make their own seed models, but having a partner is useful for discussion and testing during the activity. Homeschool students can work on their own.

Prepare Seed Models

Each of the printouts has multiple seed models. We suggest cutting these seed models ahead of time for your students. Using a paper cutter can make this prep go quickly. Print out and prep enough so that each student has one Maple Seed Model, one Rain Tree Seed Model, and one Koa Seed Model.

Make Sure You Have Enough Space

Each student will be making and dropping three different seed structure models. Students will be asked to stand up and find a space to drop their seed models. In our tests, the seed models didn’t move very far, so students should need just a few feet around their desks.

Teacher Background

You and your students may notice that the seed models don’t look exactly like the real seed structures. The models may look different than the real things, but they should mimic the function of how the real seeds fall and float to the ground.

Exploration

10 mins

Hands-On Activity

35 mins

Wrap-Up

15 mins

Extend this lesson

Vocabulary

Vocabulary

Student slideshow: English | Spanish

Teacher printout: English & Spanish

Unit Reading

Unit Reading

When a Tree Falls

In this reading, students learn how an old tree falling over can help new trees growing.

Video

Video

These videos from the BBC Private Life of Plants show how different kinds of seeds travel in different ways from their parent plant.

Transcripts

Download this Lesson to your device so you can play it offline:
Credits
 
Plants Lesson 1: How did a tree travel halfway around the world?

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