Alternatively, one may be interested in modifying the experiment outright. This is an excellent idea if one has the time and resources to do so; however, often times this is unnecessary or impossible to do. In such cases, one might consider the following approaches: improving contrast by changing viewing backgrounds ; or increasing solution-based indicator amounts (where impact to experimental outcomes is minimal). These suggestions cost very little to implement in a classroom setting and can be quite effective at helping those students in need of support(s).