Students mentioned that it would be more explicit to present procedural information, processes that involved many interactions and dynamic changes by animation that involved many steps, such as some periodical changes (the thickness change of the uterus), the movement of ions (in the topic of counter-current in kidney), ion movement in ion channel in the topic of action potential and the topic about how hormones function. Moreover, easier memorisation of content was also the advantage of animation. Students also remarked that graphics in animations were better than book as they were colourful while many images in books were black and white which was difficult to perceive. The following are some quotations: