• Ashok Nakum

Environmental chemistry which including air, water, soil, and all life forms on earth. The complete composition of Chemicals and all the essential components of the atmosphere, hydrosphere, geosphere, lithosphere, and biosphere are discussed in detail. Collaborative learning strategy considered for environmental Chemistry contains taught easily with deep understanding in a short period, enabling one to understand it while ensuring important elements are taking into account. The term Collaborative learning (CL) refers to an instruction method in which learners at various performance levels work together in small groups toward a common goal. CL is an educational approach to teaching and learning that involves groups of learners working together to solve a problem, complete a task, or create a Conclusion. CL activities vary widely, but most center on students' exploration or application of the course material, not simply the teacher's presentation or explication of it.

Environmental Chemistry, Collaborative Learning, Constructivist Learning, Higher Secondary School Students.

"Collaborative Learning Enhances Achievement in Environmental Chemistry", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.1887-1889, April-2019, Available :http://www.jetir.org/papers/JETIR1904S75.pdf

"Collaborative Learning Enhances Achievement in Environmental Chemistry", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp1887-1889, April-2019, Available at : http://www.jetir.org/papers/JETIR1904S75.pdf