1. Tennessee STEM Education Center, Middle Tennessee State University, Murfreesboro, Tennessee 37131, United States
2. Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37131, United States
3. Department of Biological Sciences, Texas Tech University, Lubbock, Texas 79409, United States
4. Department of Mathematics and Science Education, Gazi University, 06560 Ankara, Turkey