Preparing microscope
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Stem workshop Day 1
22/7/2019
Monday
8:00 am
Jaipur, Rajasthan
Stem Workshop
Day1 Experiment 1
Aim:-
To study evolution of organisms
Procedure & Observation:-
We went around the school campus looking around for soil samples. The soil had to be collected from a shadowed place and the soil should be wet. Three types of samples were found:-
- We found it near the canteen at around 9:45 am.
- We found it adjacent to the CP Block exactly at 9:55 am
- We found it near the hostel and was covered in algae. It was collected approximately at 10:00 am
Four bottles were taken and were filled with dechlorinated water. A third of every soil sample was taken and was mixed with the bottles of dechlorinated water. 2-3 drops of milk were poured into the bottles with a dropper for the enrichment of the microbes. This apparatus was to be left for 24 hours and will be observed tomorrow. We had a sample which was already enriched, ie, the microbes had already been cultured and had grown. This sample was taken from Mumbai before several weeks.
As a side activity, we measured our scales under a microscope to find out the measurement of a micron.
We also observed roundworms or nematodeunder a microscope. Roundworms are found in the intestine and the soil
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Most of you took pictures today while making the DIY microscope. Please post those pictures as replies to the following thread.
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23/07/2019
Monday
Stem workshop
Day 2 Challenge 2
Aim:-
To modify a web cam into a digital microscope
Procedure and result:-
Today we had a challenge of making a microscope out of a web cam. Though at first we all were really confused on how to approach it, we eventually found out a way. We started the progress by first making a stand for the microscope. First we made a three layered base on which we attached a vertical board with a hole in the centre. On this board we attached another piece of cardboard cut in a shape to support the microscope. To hold the microscope we decided upon using two equally cut pieces of cardboard with two holes to fix the microscope.
After the stand was completely build we had to start with converting the webcam into a microscope-our main challenge. To build the microscope we inverted the optics but a problem we faced was that the inverted optics were not focusing very well. This took us a lot of time to finally make the optics focus to complete the microscope . But now this microscope is now completely functional.
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Soil Nematodes Image by Sophia students…
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While watching the leaf sample from cp block bushes I found round worms in it. The movement of it was amazing to watch so I have also shared it with you.
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A small clip of a sample we were provided by the STEM Games. This sample is from Mumbai and was cultivated for about 20 days.https://stemgames.metastudio.org/uploads/default/original/2X/7/79a7b28abf86e30fcc748215ed80578e6ba357db.mp4
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What is the name of the microorganism present in this slide?
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how does bio-diversity related to the characteristics of abiotic factors of an ecosystem?
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How does a snail survive underwater? Does it have gills?
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How many species are there on the planet?
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what are the world’s rearrest species?
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How many species go extinct every day?
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