The e-twinning project "Hello spring. Feel the green harmony" is focused on natural, ecological and social education. Spring is the time when nature comes to life and the world becomes interesting and colorful. Children are constantly watching, observing and examining. This is a good time to help children discover the green world. The aim of the e-twining project "Hello spring. Feel the green harmony.” is to deepen children's knowledge about spring as the season when nature comes to life, to develop respect for nature, to improve the ability to observe it and to express opinions on the topics learned. The project is intended to be a reason to smile more often, be happy and feel emotional harmony through contact with nature and more spring sun.