Secondary 1 – Biology: Observing Cheek Cell
In a hands-on experiment, Secondary 1 students explored the microscopic world by observing organelles from their own cheek cells. Using microscopes as their primary tool, they were able to view tiny human cells that are invisible to the naked eye. Before the experiment, the students had already learned about the parts of the microscope and how to use it properly, ensuring they were prepared for the task ahead.
To begin, students gently swabbed the inner wall of their oral cavity with a cotton bud to collect cheek cells. They then transferred the sample to a microscope slide and examined it under the microscope. During their observation, they were able to clearly identify key organelles, particularly the nucleus and the cell membrane, which were more visible than other structures within the cell.
Following the observation, the students documented their findings by drawing the cells they observed on a worksheet. They also answered a series of questions and made conclusions based on their discoveries. Throughout the activity, the students were excited and engaged, feeling a sense of accomplishment as they successfully located and studied their own cells. The opportunity to observe the intricate structures firsthand left them amazed by the complexity and beauty of human cells. This experiment not only deepened their understanding of cell biology but also sparked their curiosity and enthusiasm for further scientific exploration. ***
