Simple or complex machines?

 A machine is a device that makes work easier.

They can be SIMPLE or COMPLEX.

A simple machine has a simple mechanism with one or few elements.

A complex machine is made up of more elements and has a more complicated mechanism.

When you use machines you should apply different forces. 

You can watch the videos below to understand it in a better way:

 

See you in class. :)

ACTIVIDAD DE VALORES PARA 4ºC

 Ver vídeo de Smile and learn ¿Cómo cuidar el medio ambiente? https://www.youtube.com/watch?v=nvUqnpicSd0

Coge un folio y escribe y contesta las siguientes preguntas:

1º Escribe las acciones que llevas a cabo ya para cuidar el medio ambiente.

2º Escribe las acciones que realizarás cuando sea mayor para seguir cuidando nuestro planeta.

3º ¿Qué significa la palabra sostenible?

Por último, os propongo un reto. Se llama “detective ecológico”. Tenéis que ver este vídeo de Smile and Learn: https://www.youtube.com/watch?v=JkqK7iem_AU

 Tenéis 20 segundos para identificar la persona que está haciendo algo mal con respecto al medioambiente. Escribid en el mismo folio las acciones que estaban mal.

Corregiremos estas actividades y las de la semana pasada cuando os incorporéis. ¡No olvidéis traerlas!

FLOTATION OR SINKING?

 Why does a long boat float on the water but a small stone sink? 

When you place an object in water, the force of gravity pushes the object to the bottom, but another force pushes the object upwards. We call this force bouyancy.

Whether an object sinks or floats in a liquid depends on the MATERIAL it is made of. 

If an object is light for its size, it floats. These objects have a LOW DENSITY of matter. 

If an object is heavy for its size, it sinks. These objects have a HIGH DENSITY of matter.

Some objects are light for their size because they contain AIR. Large ships weigh a lot, but because their hull is hollow they are light for their size and have a low density.

Watch the videos below to understand it in a better way:

Have a nice weekend!

FORCES

 Hello kids,

You can see the presentation about forces below:

You can use it to learn about forces. See you!

4C SOCIAL VALUES TASK

 Hi Class,

This is the Social Values task for 4th grade C:

PROPUESTA DE VALORES

1º Investiga qué día se celebra el día del medio ambiente, escríbelo en un folio junto con las acciones que consideras que todos deberíamos cumplir para cuidarlo. A continuación, escribe las cosas que están contaminando nuestro planeta y los daños que está provocando.

 

2º En ese mismo folio por detrás, realiza un dibujo de nuestro planeta y coloréalo.

Esta actividad se entregará a la vuelta.

Hope you have a great day!

Paula

4thC GRADE CLASS HOMEWORK

 Hi guys,

As I have told you before in the online lesson, you can watch the below about materials and properties below:

Remember you have to choose an object and prepare the answers of the following questions:

1. WHAT IS IT?

2. WHAT IS IT MADE OF?

3. WHAT ARE ITS PROPERTIES?

You can also check here the answers of the last exercise we have done online. 

1.t

2.n

3. m

4.s

5.h

6. g

7. p

8. r

9. j

10. l

11. i

12. k

13. o

14. q

15. b

16. d

17. f

18. a

19. c

20. e

See you tomorrow at 12:00,

Paula

INVESTIGATION

 Hello kids,

You can watch some videos about the scientists you have to investigate about (4ºC and D) during this weekend. Remember to choose just one scientist:

MARIE CURIE VIDEO

Enjoy your weekend!

Matter among us!

 Hi kids!

You can see the presentation about matter below:

We hope you like it! :)

MATTER MATTERS

 Hi kids,

Last week we started our new Project about matter and materials. During this term we are going to learn lots of things about it.

For homework, you had to create a poster about the three states of matter. They are SOLID, LIQUID AND GAS. 

Here you can watch some videos about it:

The characteristics of these three groups are:

SOLIDS have a fixed shape and size. They cannot flow because their particles cannot move from place to place. Their particles are close together.

LIQUIDS have a definite size but they can have a different shape depending on the container they fill. They can flow and take the shape of the container because their particles can move around each other.

GASES have a no definite size or shape. It means their particles can move quickly in all directions. They can flow and completely fill their container.

Hope you know now more information about the three main states of matter...but, do you know there are other states? What are they? INVESTIGATE ABOUT IT ;)

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INVERTEBRATES

 Hi kids,

You can see the presentation about invertebrates below. It is going to be useful for your investigation. :)

Have a nice weekend!