Annotation. This paper considers methodological approaches to the assessment of learning achievement, analysing the impact of the mark on learning motivation of students. External testing and subsequent questionnaires data may serve as an indicator of increasing learning motivation of students due to their confidence in the assessment results. Reliability of assessment is an incentive to enhance learning activities of students and increase interest in a given academic discipline. We observed difficulties of obtaining an objective assessment in schools and possible ways of overcoming them. The research provides the basic provisions of the assessment using the design pattern of assessment tools and processes on the basis of evidence-based arguments modelled on Evidence Centered Design which provides assistance in the development of high-quality assessment tools. The use of patterns may allow educators to make greater use of methods for classifying, organising and planning the assessment of cognitive and competency-based learning outcomes.
This research was carried out to examine the effect of various volumes (0.5, 0.75, 1.5 and 2 mL) of the frozen sample on cryopreservation of sturgeon sperm and also the possibility of using the method of vitrification of sperm under deep low-temperature cooling in the form of thin films on nets. The object of the study was the spermatozoa of the Russian sturgeon (Acipenser gueldenstaedtii Brandt, 1833) and the Siberian sturgeon of the Lena population (Acipenser baerii Brandt, 1869). There is a direct relationship between the volume of frozen material and the survival rate of defrosted sperm. With the increase in freeze sample preservation frozen-melted cells is falling, as is the range of cooling rate to freeze the sample, in which the majority of cells are frozen at a speed different from the optimal values. When cryopreservation of a sperm smear in the form of a thin film, the analysis of cell movement activity after defrosting showed the suitability of such sperm for use in the fish-breeding process. The highest life time of the sperm as it was observed during the freezing of the films on the plastic samples.
Acute deficit of soil moisture during the growing season of crops negatively affects the yield. Various tillage methods that are part of the technology (traditional and zero) of winter wheat cultivation affect the soil structure in the topsoil, forming the soil structure in such a way that it acquires the properties of accumulation and preservation of atmospheric moisture. Purpose of the study is to determine the method of soil cultivation that contributes into increase in winter wheat productivity and moisture preservation in the soil. The study of various tillage methods was carried out under the conditions of many years of stationary experience in leguminous crop rotation. Soil and climatic conditions over the years of research were taken into account. The researched processing methods that form the basis of the traditional cultivation technology and implement their tillage tools are: surface - disc harrow B7T; small combined unit KUM 4; dump plow PN5-35. And cultivation of winter wheat by seeder of direct sowing WINTERSTEIGER Plotseed according to zero technology was studied, i.e. the main tillage was absent.
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