The kindergarten to third grade class learned about mezuzot after learning to sing the sh'ma. They looked at a real scroll, which has the sh'ma and a few other paragraphs, including v'ahavta. Everyone copied or traced the sh'ma onto their own "scrolls" and decorated the plastic bottles.
שְׁמַע יִשְׂרָאֵל יְהוָה אֱלֹהֵינוּ יְהוָה אֶחָד
Listen, Israel. Adonai is our God. Adonai is one.