Congratulations to all students who found 210 to be the twentieth triangular number. Winners include Agnes, Raymond, Lucas, Eliot, Wilder, Helena, Wit, Max, Arthur, Abe, Ethan, Norah, and Olive of the 3rd grade, Bea, Ridley, Akira, William, Asher A., Daniella, and Carter of the 4th grade, Hektor, Henry of the 5th grade, Shaw, Remi, Nuala, Esme, Felix, Leo, Maya, Colin, Noah, Sam H., Mala, Jackson, Noa of the 7th grade, Lyla, Clementine, Sebastian, Sisi, Julian, Lucas, and Will of the 8th grade.