👂👃👄 Unit 1: We have healthy habits 👅💪

Key words:

1. What makes us living things

All living things have three essential vital functions. Nutrition, interaction and reproduction.

Nutrition: We get energy and raw materials from food

Reproduction: We have offspring similar to ourselves

Sensitivity: We sense what happens around us.

                                       Cells

Our body is made up of millions of tiny cells. Cells are the basic units of life.

                                 

                                  2. What is our body like?

Our body has three main parts: head, trunk and limbs. 

Inside our body 

There are many organs inside our body. Organs carry out the life processes.

3. How do we feel?

We have different emotions in different situations.

Our emotions can affect our health

4. How do we grow and change?

As we grow, we go through different stages of life.

CHILDHOOD: During early childhood, babies change very fast. Newborn babies drink milk and are dependent on adults. Children learn to read and write at school.

ADOLESCENCE: Teenagers prepare to become adults. Boys and girls develop in different ways.

ADULTHOOD: Adults stop growing. Their body is fully developed. They can have children

OLD AGE : Elderly people begin to lose strength. Their bones are fragile and their muscles become weaker

5. How can we stay healthy?

When we are healthy, we feel good and our body works well. Healthy habits keep us healthy

1. Have good hygiene habits to prevent illnesses.

2. Eat healthy foods. They keep your body working correctly.

3. Exercise and do sports regularly. They keep you healthy and happy.

4. Do leisure activities. They help you to feel happy and relaxed.

5. Have good posture. It keeps your back straight and strong.

6. Sleep about ten hours every night to wake up with energy.

 

Unit 4: We preserve ecosystems

1. What is an ecosystem?

An ecosystem is a community of living things that live together in a particular place

It has three components:

- Living things 

 Animals and plants are living things. 

All living things belong to a species.

 A population is all the living things of the same species that live in an ecosystem. 

A community is all the different populations of living things that live together in the same ecosystem.

The physical environment 

The physical environment of an ecosystem is made up of all the non-living components, like climate, soil and water. 

There are two different types of physical environments:
-  terrestrial ecosystems on land
-  aquatic ecosystems in water

Relationships between living things and the environment 

The living things in an ecosystem have a complex relationship with the physical environment.  

Activity 1

2. How do living things obtain food?

In every ecosystem, all the living things need to find food.

Producers and consumers 

According to how they obtain food, living things in ecosystems are producers or consumers

Food chains

We use food chains to show how living things feed on other living things in an ecosystem.

 Food chains show pictures of the living things, joined by arrows. 

Food chains always start with a producer. 

be careful with the direction of the arrows, remember that it means "is eaten by"!

worksheet 1

worksheet 2

Food webs

 Food chains in an ecosystem are very complex because one living thing can be included in several food chains. 

We use food webs to show more than one food chain in an ecosystem

3. What are other relationships in ecosystems?

Relationships within the same species

Relationships between different species

Activity 1

3. What are the main types of ecosystems?

There are many different types of ecosystems in the world. 

We classify them into terrestrial ecosystems on land and aquatic ecosystems in water.

Terrestrial ecosystem

aquatic ecosystem

song to review the unt

 Here is a website with interactive games (Blooket) Where I have created as a review of natural science.

You have to register to use it first, you only need an email address. 

https://dashboard.blooket.com/set/640dc645ccf907b145fc15f5 

unit 2 We protect animals

 1. What  are the life processes of animals ?

Nutrition

Through nutrition, animals obtain the substances and the energy they need to live. They need to eat other living things. 

Respiration

Besides food, animals eed oxygen. Oxygen is a gas found in air and water. Animals take in oxygen either throug lungs or through gills. This process is called respiration,

Sennsitivity

Animals receive information about what is happening around them through their sense organs. The brain receives this information, interprets it and gives an appropriate response. This process is called sensitivity

Reproduction

Reproduction is the process by which animals produce offspring similar to themselves

 

 

Oviparous vs. viviparous: 

http://www.tinytap.it/activities/goai/play/viviparous-oviparous

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2. What type of animals are there?

vertebrates

They have a hard internal skeleton with a backbone. Their body is divided into three parts: head, trunk and limbs.  

There are five groups of vertebrates:

Invertebrates

Invertebrates do not have an internal skeleton with a backbone

1. Sponges are different shapes. They live in the sea. They cannot move about. They are fixed to the seabed.

2. Jellyfish float in the sea. They look like an umbrella. They can sting with their tentacles.

3. Worms have a long, soft body and no legs. There are different types of worms

4. Molluscs have a soft body. Most of them, like snails, have a hard shell for protection.

5. Arthropods have a hard outer shell. Insects are the most abundant group of arthropods.

6. Echinoderms, like starfish, have hard, spiny skin. 

Vertebrate:

https://wordwall.net/es/resource/5158522/vertebrates 

Invertebrate:

https://wordwall.net/es/resource/2609387/invertebrates 

https://wordwall.net/es/resource/38289417/invertebrates

Vertebrate vs invertebrate: 

https://wordwall.net/resource/39196/science/vertebrate-or-invertebrate 

3 What are mollusc like?

All molluscs have a soft body.

The main  groups of molluscs:

https://www.liveworksheets.com/worksheets/en/Natural_Science/Molluscs/molluscs_qe5478dd

4. What are insects?

Insectsc are the largest group of animals in the world

 * How do insects reproduce?

Most insects lay eggs. A larva hatches from an egg. The larva changes into a pupa. The adult insect emerges from the pupa. This process of change is called metamorphosis.

 

 

Insect groups

Arthropods:

Insects belong to the invertebrate group called arthropods, the most numerous group of animals.

 

- All arthropods havea hard case on the outside.

- Arthropods have jointed legs