Tomorrow is Giving Tuesday, a global celebration of giving back! As a teacher, you can harness the momentum of this special day to benefit your students, classroom, and community. Guide your students through gratitude activities Harvard professor Francesca Gino studies what she calls the “gratitude effect”. Giving or receiving a thank-you, she says, contributes to higher levels of self-worth and triggers positive behaviors towards others. You can incorporate DonorsChoose.org thank-you notes into a classroom lesson on gratitude (and letter writing). In the words of Meredith, a DonorsChoose.org teacher, “Thank you notes are one of my favorite parts about the DonorsChoose process.