This powerpoint is a great overview of the irregular preterite verbs in Spanish. This is good for Spanish II students as an introduction and a review for Spanish III students. The verbs are fully conjugated and have example sentences. The last two slides have a small practice with the answers.
ir, ser, hacer, dar, ver, estar, tener, poder, poner, saber, querer, venir, decir, traer
(Note- when I uploaded the example images on this site, they moved things around a bit. All text is aligned and visually pleasing. If you have any problems, please contact me.)