The project aims at developing in young learners the ability to observe nature, how it changes throughout the year, as well as to notice mathematical aspects in this area. It is an opportunity to train logical thinking, spotting changes, learn how to measure temperature and take care of plants. At the same time we practise English vocabulary concerning nature in 4 seasons in a year. Students have chance to compare how the seasons look like in various parts of the world. They also learn to cooperate with students from other countries. Most activities of this project involve both Maths and Science.