Reply To: Chemistry: Photosynthesis Light Steps Home › Forums › Nemeth Code for Math and Science › Chemistry: Photosynthesis Light Steps › Reply To: Chemistry: Photosynthesis Light Steps September 30, 2013 at 2:38 pm #22227 dworthingParticipant If you are doing these fractions spatially with an actual horizontal fraction line then you can use contractions because none of those words would be touching a braille indicator.