According to the theory of inner skin should choose a font size 36-60 points, as well as the background and font colors in the same way to balance and a slide that contains content not more than 6 lines.
According to the theory of Skinner should be 36-60 point font size as well as font color and background in the same way to balance and slide to contain no more than 6 lines.
According to the theory of the Skinner should choose the font size 36-60 points. As well as the font color and background in the same way to balance and slide to เนื้อหาไม่ over 6 line