I've spent entirely too much time searching for Periodic charts that I could reproduce for student use. Now you can eliminate tedious time spent searching. This set, which contains three periodic charts, contains one which is complete with symbols, atomic numbers and atomic mass. The second displays only the symbols and is brightly colored. The third is blank. They allow the teacher to develop instructional worksheets for classroom, homework, and/or lab assignments. They can also be used to get the kids excited with multiple variations of period chart bingo designed by you!