Question

Describe 2 changes that are harmful?How can u prevent them.

Answer 1

Chemical and physical changes are essential to man and the environment. Understanding how to differentiate between chemical and physical changes is an essential skill that secondary school students must acquire. Additionally, it is important for students to understand how the interference of man has caused some chemical and physical changes to become harmful for the environment, society and the economy. This article presents a lesson plan that aims to enhance student understanding of chemical and physical changes, and to encourage students to analyze how chemical and physical changes can have a harmful effect on the environment. The article also presents an explanation of inquiry-based learning and context-based learning, which were the main teaching techniques used throughout the lesson. The lesson plan includes instructions to carry out four experiments at varying levels of inquiry. The students are required to analyze the result of their experiments in relation to the environmental problems we face today. Assessment methods that incorporate the use technology are presented as well.