Which materials keep us dry? - Presentation

As part of a practical science lesson, students are encouraged to explore and understand the properties of different materials, specifically focusing on their ability to repel water and keep us dry. The lesson begins with a discussion led by the teacher, prompting children to think about objects that protect them from getting wet, such as umbrellas and raincoats, and to identify the materials these items are made from. The teacher also guides the students to consider materials that would not be effective in keeping them dry, encouraging them to observe and note the differences.

Following the initial discussion, the children are tasked with conducting a hands-on investigation to determine which materials are water-resistant. They are provided with a set of resources, including glass jars, a plastic lid, pieces of wool, cotton, and tissue paper, a funnel, and a small bottle of water. Working in groups of up to four, the students set up an experiment to test the water permeability of each material by observing how long it takes for water to pass through them. They are instructed to carefully document their findings and draw diagrams to represent their investigative process. This practical approach helps students to understand the concept of water resistance and to identify which materials around them can keep them dry.