It was a hot dry morning in rural Nicaragua when I found myself waving a “red heart” flashcard in front of group of fifth graders. Jumping up and down and shouting “Heart!”, was my new mission in life. For this moment, it was all that mattered. The next moment I was thrusting a “Green Circle” card over my head and shouting “Circle!”. The children’s answering chorus of “Circle!” sent a wave of chills across my face and down my back.