One purchase covers up to 5 students. To add more students, purchase an additional license. Prefixes & Suffixes I — Practice App (Grades 3–6) Every strong reader and writer knows that words are built, not memorized. A student who knows that un- means "not or opposite of" and -ful means "full of" can unlock the meaning of hundreds of words they've never seen before — without a dictionary. That's what this app builds. Prefixes & Suffixes I works through 48 of the most common English word parts — two new ones each week for 24 weeks. Each word part gets three kinds of practice: Flashcards to learn the meaning, Quiz to test recognition, and Use It to find the prefix or suffix hiding inside real vocabulary words and apply it in context. A word part is mastered after three correct answers in a row. Miss one and it comes back until it sticks. Mastered word parts cycle back for review so nothing fades. A placement check lets students skip ahead past word parts they already know. Multiple students can keep separate profiles, each with their own progress and mastery record. Works on iPad and laptop in any modern browser. No app to download, no subscription — one purchase, full access. How access works: After purchase, log in at cornerstoneacademics.co with the same email you used at checkout and visit your My Apps page — Prefixes & Suffixes I will be waiting. No codes, no downloads. One purchase covers one student. Need access for an additional student? Simply purchase another copy.