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How to make Grape Juice
 

How to make Grape Juice

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A science project made in the class, first in català and then in English.Lots of vocabulary and sentences were arisen!

A science project made in the class, first in català and then in English.Lots of vocabulary and sentences were arisen!

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    How to make Grape Juice How to make Grape Juice Presentation Transcript

    • Let’s Make Grape Juice (or vinegar!) Students of Grade 4 School Pau Vila Esparreguera. October, 2013
    • So, here’s how we made our own Grape juice. First, we go to harvest some grapes in a vineyard near the school (we ask for permission!)
    • In the school we know more about the different parts of the grape plant.
    • We’ve got 2 types of grapes: black and green. We separate in two bowls.
    • Here we are separating the grapes from the stems, making sure to pick out any damaged or rotted ones.
    • In these photos we are weighing the grapes with scales. It is difficult to find the right weigh with these scales!
    • We clean them with fresh water and… Now it is time to mash the grapes with our hands (people in the past made it with their nude feet!!)
    • It isn’t funny! It’s a little disgusting!
    • But finally we get some grape juice! Here, we are straining the mixture with a strainer... ...to separate the juice from the “rapa”. We don’t know how to say “rapa” in English, so we leave the Catalan name!
    • Now we pour the grape juice into bottles.
    • This is “rapa” We put the “rapa” in a plate...
    • ... And weigh again with the scales to check how much weigh does the grapes have lost! (some math is needed!!)
    • The grape juice is ready! We taste it! Mmm! Yummy! The reporter takes some photos for the class diary.
    • Now we want to experiment something. What happened if we leave the grape juice in closed bottles, without air? We learn about “fermentation”.
    • What can you see in these photos? The bottles are full of carbon dioxide and the plastic bottle is hard, full like a balloon! But there is another thing... Yes! Hundreds, maybe thousands of flies!! On the computer, on the table, at the wall... And it smells nasty!
    • A group of students catch some flies and observe them carefully. They make a little research and here it is the result:
    • The Fruit Fly or the Vinegar Fly
    • Through the fermentation process we get “vinegar” Time to note down the results of our research.
    • Finally, we round up with and incredible discussion! And we decide to make a Power Point.
    • Brainstorming ideas, vocabulary, actions... Building vocabulary
    • Mind mapping, listing, translating...
    • Working in groups preparing the different slides…
    • Using the Power Point to explain our experiment to other students
    • Let’s Make Grape Juice (or vinegar!) Students of Grade 4 School Pau Vila Esparreguera. October, 2013