How the heart works

The heart pumps blood into the arteries when its muscular walls contract. Each cycle of contractions is called a heartbeat. Young people have between 70 and 90 heartbeats a minute. When the heart…

how meiosis work

Match. How bacteria feed

Match each group of bacteria with the way it obtains its food: photosynthetic bacterium parasites chemosynthetic bacterium saprophytes symbionts

How often do you… ?

How often do you… ? Speaking bank

How are you today?

Miniunitat didàctica (MUD) interactiva on es treballa el vocabulari per descriure els estats d'ànims mitjançant diferents il·lustracions.

How some land animals move

How some land animals move

How a Steam Engine works

How a Steam Engine works

How to improve your listening?

Do you have trouble understanding what native speakers say? What to improve your English listening and comprehension skills? This video will give you some great tips that will help you to listen and to…

Investigate. How we use water

Investigate how we use water. How do humans use fresh water resources like rivers and lakes? What about salt water resources? Where is water from rivers treated? Which sector consumes the most water:…

How do we get electricity?

This interactive multimedia presentation shows how we get electricity and how electricity travels to our houses.