During this last term, our teacher Sara proposed a contest around the city for us. We had to find a fossil in a clothes shop in a mall, identify it, tell her about the era or period from which it was an index fossil and take a selfie with it!! It was so entertaining and funny to look for them!! Can you imagine this little friend, becoming a fossil and finishing in a clothes shop? For sure, it didn’t count on us visiting it 65 million years later…
This year we have been able to study the process of metamorphosis in both vertebrates and invertebrates, by studying tadpoles and silk worms. It has been so funny and interesting to see all their changes, and take care of them. We leave you here some pictures of their progress. Thanks little guys, it has been a pleasure to meet you!!
All the groups of 3ESO British have performed this dissection practice during our anatomy lessons along the third term. It has been very interesting to study real organs and understand everything our teacher and the book have explained and represented to us. Before doing it, we were not very sure if we were going to be able to do it, or if it was going to be disgusting, but, WE HAVE LOVED IT and we have learnt so much.
As we have been studying plants, we went to the laboratory to extract the different pigments plants have. We were surprised that they do not only have green chlorophyll as we have always studied, but also orange pigments such as carotenes and yellow pigments such as xanthophyll.
For the experiment we used spinach leaves, we broke them and smashed them with the mortar, and then added some alcohol to it. Then, we filtered it, to obtain a green juice that contains the pigments, because we have broken and destroyed the plant cells with the mortar and the alcohol. Finally, we performed a paper chromatography, by which we were able to separate all the pigments.
On the 5th of june we have celebrated UN World Environment Day 2017. This year’s hashtag has been #Iamwithnature, so we prepared a photocall in which everybody can take a picture with that message and then upload it to their Twitter or Instagram account. We also painted our hands in green, which was so funny, to represent the color of nature. We believe we have to do something to save our planet from all the environmental problems that we humans are causing. And you? Are you with nature? Join us!
During our Geology lessons, we have contacted with the scientific drilling ship JOIDES Resolution, used by the International Ocean Discovery Program, who was currently on an expedition in the South China Sea. On board, scientists from all around the world, travel the oceans obtaining cores from the sea floor to study the history of our planet, because, only by studying the past, we will be able to understand the present and predict the future. Their research will help us to understand plate tectonics, oceanography, climate change, the evolution of life on Earth, and so many more scientific issues.
They gave us the chance of touring the ship, visiting different laboratories and talking to the experts working on them, and then they explained to us their work there and answered all the questions we had. It has been a great experience, we have been able to discover real science in the middle of the Chinese Sea.
Here you are a video we prepared about the activity. Thanks to the JOIDES Resolution, and to all the scientists on board.
SCIENTIFIC CULTURE 4th ESO
Aroa García Arias, Javier Martín Benavente, Teresa Nieto Peñas
-Scientific culture is a new subject. It consists in learning about the world around us by the elaboration of projects. This time our task was learning about new materials.
-The topics that the groups had to work about were: graphene, coltan, plastics, chewing gum and correction fluid.
– The aim of this project was to search information about materials discovered or created in the last few years and to make something visual for people to see it. All the groups did a very good job distributing the job and working in groups.
Here are the photographs of the posters that the groups did:
Uploaded by MHL
For our second lab practice this year, we went to the laboratory to extract and observe DNA from human and tomato cells. DNA is the desoxyribonucleic acid, and it is the molecule which contains our genetic information, the code to make us be humans, or tomatos, or any other living thing in this world! We also had the chance to use our microscopes again to observe a sample of the tomato cells we used for the extraction.
Although it was a difficult practice, and some of us could not see a perfect final result, we have enjoyed it a lot and learnt about new techniques and materials from the biology lab. We hope to come back soon for new experiments!
During our lesson about eating and nutrition, we did a complete research project about the content of sugar, salt and saturated fats in typical food and drinks we have everyday.
First, we collected packages of products that we considered interested for the project, by analyzing the nutritional facts which you always can see in the package.
Then, we went to the lab, and made real measurements of the quantities of sugar, salt and fats of each of the products, using an electronic balance.
Then, we created the posters, so everyone could see and compare those quantities with the daily recommended intake of each of them.
We have learnt that we have to be very careful with our diet, because some products contain too much of these nutrients, that in high proportions can be dangerous and unhealthy for our bodies.
We hope you like and learn with this.
As we were studying our lesson related with the hydrosphere, we performed an experiment in class in order to analyze some of the properties of water. Then we all repeated it at home and made a presentation or video about it.
The experiment was a chromatography, to try to separate the different components of ink, by just using water. These were the results, we hope you like them!
If you want to see the full video that our classmate Miguel did about it, click here: https://youtu.be/1sIeOBabOQM