– CLASS DIARY & SUMMARY MODULE 4 –

Hi!

Last week we only had one lecture because on Thursday and Friday it was held a party for the students.

Nevertheless, on Wednesday we did a regular lesson, in which we finished the Unit 6, thus we are going to do the Progress Test 2 next Friday (March 30th). We started the lesson correcting the homework and we continued reading two text of the book: ‘Dracula’ and ‘Dr. Jekyll and Mr. Hyde’, both related to evil characters. We did some activities about them and also, we did an activity in pairs.

Then, the teacher explained a new Grammar Point: Used to and Would. We went back to the Language Reference part of the book and we learned it.

To continue with, we read a text called ‘Lee Hart and his memoirs’ and we did some activities.

Furthermore, we learned the key language for proposing, bargaining and talking about needs/expectations. We listened to a conversation in between two men. Finally, we listened to another text and we did some activities to practice.

SUMMARY MODULE 4: MATERIALS.

First part of this module is centred on advanced materials. We can learn these materials and their properties. We have been introduced to some of these new materials:

– Graphene.
– Aerogel.
– Fullerence.
– Acoustic metamaterials.
– Transparent concrete.

Principally, this module talks about what is the Graphene material and which are its properties. Graphene is an allotrope of carbon. Its name is a combination of graphite and the suffix -ene.

James Hone said something like that graphene is so resistant that if you want perforate a graphene sheet like cellophane thickness, you would need to put an elephant on a pencil.

Some of the most important properties of these materials are: self-coolant, high thermal and electrical conductivity, high elasticity and hardness, resistance and very light. Due to these properties, these materials can be used with different applications like electronic elements, computer, medicine elements, optical communication, generating, transporting and storing energy and aviation applications.

The second part of this module is based on sustainability for materials. We can define it as materials whose production is supported indefinitely by nature. These are the keys to ensure productive survival for the population and our way of life.

We can classify this type of materials in this way:

–   Materials of plant origin like wood, natural fibres and polymers.
– Materials produced using waste products such as raw materials. These are the recycled matter usual products.

Sustainable materials should follow certain requirements to ensure their sustainability.

There are different types of sustainable materials: concrete, copper, brick, recycled material, aggregates, hemp thread or bamboo. Obviously, there are some better materials than other due to their different characteristics but we can build almost everything with them.

To finish with, we should mention how important the use of sustainable materials is; furthermore, people must be aware of the environmental issues.

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