Science Buddies: "Ask an Expert"

My daughter needs to display multiple photos within very limited space. She tested bacteria on hands. To sum it up. she tested 48 people (12 elem students, 12 ms students, 12 hs students and 12 adults. Of the 12 in each group, 4 did not wash their hands, 4 washed with soap and water and 4 washed with hand sanitizer. She is trying to prove which is best in a school setting and whether we are teaching our children and adults good hand washing techniques. We photographed the petri dish in each group with the fewest bacteria colonies and the dish with the most bacteria colonies for each group. She would like to display those photos so people can see the comparison in each age group. However, she doesn't have adequate space to display them each individually. We thought about displaying them somewhat like a flip chart where they could flip the first photo up to see the next and then the third. No wash...wash...hand sanitizer. Make sense. Any other suggestions on how she could display these photos or use less photos. We were not sure which to use if we cut back on the number of photos. She also has charts that display this information for comparison. Any suggestions or help would be greatly appreciated. The science fair is February 2nd so we need to get the board finished this weekend! Thanks!

[The above post is a repeated post. The original post has been answered by an Expert here: https://www.sciencebuddies.org/science- ... =37&t=6001]