How do we go about separating sand, salt and water? - Worksheet - Year 4

In a Year 4 science worksheet, students are tasked with exploring the process of separating a mixture of sand, salt, and water. The activity is structured into three stages: the Planning Stage, the Doing Stage, and the Evaluation Stage. Initially, students are encouraged to think about the properties of solids, liquids, and gases, and how these states can change. This foundational understanding is crucial as they consider the question of how to separate a mixture of sand, salt, and water, each component having distinct properties.

The practical aspect of the worksheet, known as the Doing Stage, involves carrying out an experiment where students apply methods of separation. They might use filtration to remove the sand, which does not dissolve in water, followed by evaporation to separate the salt from the water. Finally, in the Evaluation Stage, students reflect on the effectiveness of their methods and the principles behind each step of the separation process. This hands-on activity not only teaches students about the physical properties of materials but also introduces them to scientific inquiry and methodical problem-solving.