MasterPak 2 Learning Vitamins is ready to use on Windows and MacOS. Contains Calculadder 4, 5, and 6 and AlphaBetter in printable PDF format. Contains every drill from books 4-6 of Calculadder, and all the drills from Alphabetter, the popular dictionary skills unit. Complete instructor's guides, achievement records and full grading keys are included for your convenience. Use daily to promote excellence in skills for educational growth and wise stewardship in God's world.