求翻译：我国山东教科所的王坦教授认为“合作学习是旨在促进学生在异质小组中互助合作，达成共同的学习目标，并以小组的总体成绩为奖励依据的教学策略体系。”是什么意思？

China's Shandong UNESCO by Professor Wang Tan, "Cooperative learning is the aim to promote mutual assistance and cooperation in a heterogeneous group, to achieve common learning goals and the overall performance of the group for the system of incentive-based teaching strategies."

The Shandong Province China's UNESCO Professor Wang admitted that "cooperative learning is to promote students in heterogeneous groups, mutual cooperation in achieving a common goal for learning, and as a team for the overall performance of the award based on teaching strategies. "

Professor Wang Tan by the Shandong education that "cooperative learning is to promote mutual cooperation in a heterogeneous group of students, common learning goals, and to the overall results of the group for the award are based on the system of teaching strategies. ”