Upendra Kumar. “EDUCATION FOR COOPERATIVE LEARNING IN LEARNING SOME BASIC SKILLS IN THE ACCURACY OF TENNIS FOR YOUNG PEOPLE”. Journal of Validation Technology, ISSN: 1079-6630, E-I SSN: 2150-7090 UGC CARE II, vol. 29, no. 4, July 2024, pp. 48-58, doi:10.1080/jvtnetwork.v29i4.15.