Amin Khan, Dr. Rehmat Ali Farooq, and Zahoor-ul-Haq. 2020. “Effect of Cooperative Learning Approach on Ninth Grade Students’ Achievement in Chemistry”. Research Journal of Social Sciences and Economics Review (RJSSER) 1 (3), 247-54. https://doi.org/10.36902/rjsser-vol1-iss3-2020(247-254).