+38765837328 Abstract In order to determine the extent to which reduced light intensity affects some morpho-anatomical characteristics and physiological parameters in young plants of Pisumsativum L. we compared certain plant parameters grown at full illumination (3200 lux) with plants grown at lower intensity illumination (1700, 1000 and 650 lux) in this research.The ultimate goal is a better understanding of the adaptations of the studied species (variety) to different light treatments. Low light intensity had a negative effect on the anatomical structure of the pea leaves and led to the development of thinner leaves compared to the plants grown at full illumination.The results obtained indicate that the thickness of the epidermis of the face and the back, the leaf thickness, the thickness of palisade tissue and the diameter of the conducting bundles decreased with decreasing illumination, while the thickness of the sponge tissue increased with decreasing illumination. The number of stomata both on the face and on the back of the leaves was lower at lower illumination, with the stomata cells being larger in size. The intensity of transpiration decreased with decreasing illumination, which was correlated with the decrease in the number of stomatal cells. The results show that lower light treatment had an inhibitory effect on the photosynthetic pigment content, which indicates the sensitivity of the studied species and raises the question of the level of adaptation and possible diminished yield of the species studied, if grown under poor light

Drawing upon Fischbein's theory of figural concepts, the starting point of the paper is the use and value of the history of geometry in mathematics education - first point that we make historical reference are theorems of Eudemus of Rhodes and Thales of Miletus and the second one is elaboration of these theorems in work of Serbian mathematicians Mihailo Petrovic Alas. Fischbein's theory is mainly based on a hypothesis that geometry deals with mental entities, the so-called geometric figures, which simultaneously possess conceptual and figural properties. Fischbein called the geometric figures figural concepts because of their nature. We have analyzed the internal tensions of the concepts of angle and cube, which may appear in figural concepts because of their double nature, developmental aspects and didactical implications. The goal of the research was to examine the pre-service primary school teachers' geometric reasoning regarding the correlation between figural (pictoral) and conceptual properties of geometric objects (angle and cube) in order to obtain a framework for creating didactic situations that reduce the gap between figure and concept. The results of this study show that the figural (pictoral) structure of an angle (and cube) dominates in the geometric reasoning of the pre-service primary school teachers over its formal conceptual constraints. There were some differences in situations when an image is helpful in solving tasks involving the concepts of the net of the cube and the cube itself.

: This paper will show that adding some spices and other raw materials can increase the nutritional value of bread and provide a product that will be acceptable for consumption. Sunflower seeds, olives or turmeric are added in amounts up to 10 %, relative to the total amount of flour. Nutritional value of bread was determined, the sensory analysis was performed and the durability or preservation of freshness was monitored.