Presented are seven Information Bulletins from the Calculator Information Center. Each addresses concerns that have arisen as teachers consider the use of calculators or begin to use calculators. Bulletin No. 1, prepared by Higgins, discusses "Types of Calculators." The second bulletin, compiled by Channell, presents some suggested activities for secondary school teachers. The third bulletin is a compilation of "Suggestions for Calculator Selection" at the elementary school level. Fourth is an information bulletin for administrators, prepared by Jones and Bosley. Bulletin No. 5, developed by Gawronski, is on "Leading a Calculator Workshop." The sixth bulletin, prepared by Denman, contains suggestions for using calculators in grades 1-3, while the seventh bulletin, developed by Immerzeel and Ockenga, presents activities for using calculators in grades 4-6. (MS)