We present the results of having applied a set of options in thermodynamics courses for encouraging a strong student in-class participation and engagement. Strong emphasis is given to planned ahead in-class student Q&As encompassing both thermodynamics and statistical mechanics and supplemented with take-home extra syllabus reading. Additionally, we designed research-oriented individual and group projects with the goal of promoting critical thinking, problem solving, and both oral and written communication skills. These projects involve quantum chemistry calculations of gas phase thermodynamic properties, solid state equations of state, and optional topics self-selected by the students from a list of provided possibilities. The execution of the Q&As and projects is beneficial and challenging for both the students and the instructor. Our practice demonstrates significant improvement in student's interest in learning and increased enthusiasm in teaching performance.