When using this gematriyah interactive educational aid, student’s will strengthen their skills though the text of Rashi’s commentary on the words, ''ויהיו חי' שרה מאה שנה ועשרים שנה ושבע שנים'' “and the years of the life of Sarah were 100 years, and 20 years, and seven years…” (Chayei Sarah 23:1) will become clear to your students when they use this interactive educational aid to learn the significance of each specific age and period in the life of Sarah Imeinu.