The purpose of this paper is to present the observation of the development of cherry tree phenophases as an example of inquiry-based learning. Using observation of cherry trees in two different locations, we determined how the location itself influenced the rate of pheno- phases. We found that there was a difference in the rate of development of phenophases in different locations. We were also interested whether there is any influence of cardinal direction of the branches to the development of phenophases on it. We have found that very small differences in phenophases occur between the branches, and at the same time we have found that there are differences in the intensity of the colouring of the fruits through development. The fruition of those fruits, which were exposed to the sun for a longer time, was faster. Students with such a way of teaching will be given a direct experience which leads to a more in-depth and lasting knowledge of the structure and functioning of individual plant organs, plant reproduction and ecology.
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