This is a fun way for students to practice or review the regular and irregular forms of the preterite in Spanish. The activity is magic squares. There are 9 (regular verbs) or 16 (irregular verbs) squares in each grid and each contains a conjugated form of a verb in Spanish preterite. Below or next to the grid are 9 (or 16) subject/infinitive verb pairs. The student writes the number of the subject/verb with the correct verb form in the grid. If done correctly, each row, column, and diagonal adds up to 15 (9 square puzzle) or 34 (16 square puzzle). There are 13 puzzles total on 7 pages.