A Science Fair at Parkland
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By Rodolfo Eric Angat
Parkland High School
NOVEMBER 12, 2019 – Parkland Magnet High School hosted a Science Fair, which was held on November 7, 2019 from 9:05 to 10:35 a.m. at the Media Center. The event was led by Rodolfo Eric Angat, an Earth and Environmental Science Teacher. The goal of the fair was to allow students to experience learning. Guest panelists were Rhonda Higgins, Harvey Cowden, and two Senior IB students. They judged 15 Science Fair projects of the ninth-grade Earth and Environmental Science classes. Winners will advance in the District Level Competition.
Science Investigatory Project
Research is an integral part of science. Through research, students practice critical thinking skills that results to the development of problem-solving skills.
The focus of the research projects was on “Water Conservation and Management”.
Our planet is covered with 75% water, yet a lot of people in the world are suffering from water scarcity.
Earth’s water is composed of 97 percent saltwater, which is not usable. Only 3 percent of earth’s water is freshwater, where more than 2 percent of it is locked within the polar ice caps and around 1 percent is usable freshwater. Many of us are still indiscriminately using the resource and pollute it.
We need water and more so for the future generation needs. It is our responsibility to take care the precious resource!
Experiments were conducted to validate the hypothesis based on the scientific inquiry. Focus on the independent, dependent, and controlled variables were upheld to allow student researchers to acquire valid data that would direct them to a sound conclusion.
SIOP (Sheltered Instruction Observation Protocol) students used various visuals and manipulatives in order to demonstrate the concepts of density, percolation, leaching, and groundwater pollution.
The first group acquainted themselves with the beaker, cylinder, spoon, water and food color. Using the mentioned materials, the members of the group exhibited how they can make a raw egg float in water. The audience were fascinated on how the egg floated in saltwater and how density played as the major factor. The second challenge that the group presented was making the raw egg float in the middle of a mixture. This feat was accomplished by pouring a saturated solution into a cylinder, gently putting the egg in, and then pouring colored freshwater. The varying densities between the saltwater and the colored freshwater made the egg to float in the middle of the two liquids.
The second group used graduated cylinders, beakers, water, spoon, pebbles, sand, and clay to simulate the process of percolation and groundwater recharge. The group also showed how dissolved pollutants can contaminate groundwater supply.
The demonstration allowed the audience to see differences in the rate of percolation between pebbles, sand, and clay. By adding food color, which is simulating a dissolved pollutant, the audience discovered how the groundwater can be polluted through the process of leaching.
The SIOP students did not only discover new words and concepts, they also practiced essential laboratory skills like labeling, transferring and measuring volume of liquids and creating mixtures.