Primary 5 – Science: Interaction of Matter
In the previous year, fifth-grade students explored the concept that water can exist in three distinct states: solid (ice), liquid (water), and gas (water vapor). They also grasped the idea that shifts between these states occur when heat is gained or lost.
To better understand these principles, the students conducted a practical experiment to determine the melting point of a solid. They filled a glass with crushed ice and closely observed the process. This experiment revealed that the temperature at which a solid starts to melt is its melting point. Furthermore, the students witnessed the boiling process when they heated water, observing small bubbles forming at the bottom of a saucepan, gradually growing until they reached the surface. This exploration of boiling led to a deeper understanding of related phenomena like condensation and evaporation.
Subsequently, the students delved into the precise measurement of temperature changes using a laboratory thermometer, learning the step-by-step procedure. They also discovered that these temperature fluctuations could be recorded and graphed, providing valuable insights. Through these hands-on experiments, the students directly engaged in meaningful learning, recognizing the presence of science in their everyday lives. ***
