To get the child writing independently, have him or her do a writing exercise that crosses the midline to eliminate reversals and then teach him or her simple spelling words by using color, picture, and looking up with the eyes to engage the right, visual hemisphere.
Disinfecting kills germs on surfaces or objects. Disinfecting works by using chemicals to kill germs on surfaces or objects. This process does not necessarily clean dirty surfaces or remove germs, but by killing germs on a surface after cleaning, it can further lower the risk of spreading infection.
Then you can see which anti-bacterial sanitizer is more effective in killing germs. Make sure all three Petri dishes have germs collected from the same place in your home or classroom at the same time so you know they are all exposed to the same bacteria. The dishes also need to be grown in the same warm, dark place for the same amount of time so that the conditions are standardized as much as possible.