Experimental Sciences


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CISM Science Guild Participates in the 2nd Philippine Biology Olympiad 2019: SISID

Ateneo de Manila University (ADMU) hosted the 2nd Philippine Biology Olympiad (PBO) 2Ol9: Sisid last February 23 to 24, 2O19 at the AdMU Campus in Quezon City. A total of 370 participants from 98 high schools all over the Philippines arrived at the Ateneo de Manila University campus to join the two-day program of Philippine Biology Olympiad (PBO) 2019: SISID which determined the country’s four delegates to compete at the International Biology Olympiad (IBO) in Szeged, Hungary. Two major events were Quiz Bee and the Laboratory Skills. Supplementary activities were poster making, facilitated big group discussions, symposiums, and amazing race as the culminating activity. All these activities aim to foster camaraderie among participants, enhance the students’ interest, passion, and awareness on issues in specific learning area in the Biological Sciences.

Four (4) students from our school participated in this year’s PBO 2019: SISID:
Brian Martin Muñoz (Grade 7MS)
Deniz Dagtas (Grade 10AG)
Annika Laude (Grade 10AG)
Matthew Lawrence Tan (G11PB)

Congratulations to these four amazing students who actively participated and indeed gave their best in the said event. You have proved that success isn’t always measured in numbers. It is measured by the strong will, the breadth of your hopes and the way you handle challenges along the way. Special thanks to my co-moderator and CISM’s MS Science teacher, Ms. Madhumita Saini and to the entire Science Team. Kudos!

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The “Visking” Tubing Experiment

The human body is a complex system that consists of varying organ structures working and indefatigably functioning in sync together to maintain equilibrium, thus, to sustain life.

IB DP Year 2 students took their first on-hand experiment on digestion, called “Visking Tubing Experiment”. One of the best ways to learn and understand the processes that take place in the body is by modelling. This experiment provides a visual way of demonstrating diffusion through a semi-permeable membrane. It was used to model the human gut as well as to investigate the effect of the enzyme called amylase on starch. Two standard macro molecules tests were done. The first test done is called the Iodine Test. It is done to determine the presence of starch in certain foods or substance. The second test done was the Benedict’s test, which is used to test for the presence of reducing sugars, such as glucose.

The Visking Tubing Experiment set-up

Benedict’s solution, used to test for the reducing or simple sugars.

All samples were taken and were submerged in hot water bath. Benedict’s reagent starts out aqua-blue in color. As it is heated in the presence of reducing sugars, it turns yellow, green, orange or brick-red. The final color of the reagent signifies the concentration of reducing sugar. Brick red signifies a high concentration of glucose.

Iodine solution

Iodine solution, used to test for starch. A blue-black color results if starch is present. Otherwise, the original brown color will will be retained.

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Organic Ice Cream







During the Science Week Grade 10 made their own versions of Organic Ice Cream in line with their topic in Chemistry which is Organic Chemistry. They tried to make variety of flavors from using fruits, nuts, and green tea. They also observed the temperature required to form the ice cream texture, use of salt to lower the temperature and keep the ice from melting.They all enjoyed this fun activity.

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Science Week 2018

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CISM celebrates Science Week 2018. Elementary and Middle School students come to see the interactive and informative exhibits prepared by our MS/HS and IB Science classes.

Some groups presented simple science chemistry and  physics experiments and tricks to other students while the other classes exhibited their projects and inventions. Gr.9 Biology class showcased their 3D models of biomolecules while IB Biology students showed their terrestrial mesocosms.

Science rocks!

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3D DNA Models

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Grade 9 students created their 3D DNA models using recycled materials. Some used recycled cardboards, newspaper, chip containers and popsicle sticks.

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G11 Testing Indicator for Acids and Bases








G10′s had a lot of fun learning how to test different chemical indicators and knowing how to distinguish acids from bases during our Chemistry class. They were able to learn skills such as proper handling of glasswares and using other laboratory tools such as the ph meter where the students were asked to make an interpretion on the digital readings as they test each samples. Also, they practiced laboratory safety by wearing safety gears since there is a need for them to get work with acids and other chemicals. A follow-up experiment on making their own organic indicator using flowers and red cabbage.

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G7 Artisan Soap Project




Grade 7 enjoyed making their soap project in Chemistry as one of their final requirement for the 3rd Quarter.
They were able to make use of their skills in proper handling of laboratory apparatus and as well as practice safety in the lab while working on their soap project. They used different prcesses in creating and improving their product such as melting, freezing, purifying as well as using methods to avoid contamination of bacteria. Using an existing organic soap base the class which was devided in 2 groups were able to make different variants . They used organic ingredients such as flowers, oats, cinamon etc.. and researched on the additional health benefits when added to their soap product. The class enjoyed working with their groups and collaborating their ideas.


G7 while presenting their Soap Project to the Class

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Finding Evidence of Chemical Reaction

Grade 10 is learning about the evidences of chemical reaction in this experiment they will recognize that formation of precipitate is a result of chemical reaction. They used different compounds in the laboratory and experimented on the reactions of each when mixed.at the end of the the experiment as part of post-lab discussion they were able to identify mixed compounds that undergo chemical reaction.


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Cells and Microscopy

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Grade 6 JL and Gr.9 students study the cell, its structure and functions. They were also able to observe prokaryotic and eukaryotic cells under the microscope. In addition, students created their own analogy of the cell structure and functions. Some groups compared a cell and its parts with a chocolate factory. Another group compared the basic unit of life with a hospital.

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Life-Cycle Assessments of Selected Products

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Grade 10 Systems Design and Society students presented two versions of their chosen product’s Life-Cycle Assessment. The first LCA is of the traditional product that we could buy in the market today. The second LCA is of the new improved version of the product.

Students were grouped and decided to work on LCAs of eco cream eyeshadow, powdered shampoo and bio handsoap. As part of their final requirements for the course, students presented their LCAs in class and in front of Gr.9 students. They also showcased their actual final products. Gr.9 students tried the products to see its effectiveness.

  • http://www.deped.gov.ph/