| 1. |
- Amato, M, et al.
(författare)
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Literature review on STEM education
- 2019
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Ingår i: Do Well Science. - Breslavia : Società Dante Alighieri. - 9788394521301 ; , s. 15-27
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 2. |
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| 3. |
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| 4. |
- Articus, Kristina, et al.
(författare)
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Phylogenetic studies in Usnea.
- 2000
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Ingår i: The Fourth IAL Symposium Progress and Problems in Lichenology at the Turn of the Millenium, Abstracts: 100. Barcelona..
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Arup, Ulf, et al.
(författare)
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High performance thin layer chromatography (HPTLC), an improved technique for screening lichen substances.
- 1993
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Ingår i: The Lichenologist. - : Cambridge University Press (CUP). - 0024-2829 .- 1096-1135. ; 25, s. 61-71
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Tidskriftsartikel (refereegranskat)abstract
- High performance thin layer chromatography (HPTLC) is a method that can be used for screening lichen substances. It is as simple to use as standard TLC, but has many advantages: It is more sensitive, it is possible to run more samples in a shorter period of time, and the amount of solvent used is much smaller. The material needed and the methods used are described in detail. Horizontal chromatogram development was used. Since two of the solvents used in system B have been substituted, and since the properties of the HPTLC plates are slightly different, our results are not entirely in accordance with the standardized TLC method. A revised table for the identification of 69 lichen substances (obtained from 62 taxa) is accordingly presented.
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| 6. |
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| 7. |
- Ceken, Fatma, et al.
(författare)
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The use of the theory of conceptual profiles to assess learning outcome
- 2016
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Ingår i: Electronic Proceedings of the ESERA 2015 Conference<em></em>. - Helsinki : University of Helsinki. - 9789515115416 ; , s. 2716-2721
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Konferensbidrag (refereegranskat)abstract
- The Swedish Schools Inspectorate (2012) made an evaluation of the quality in science teaching in year 1–3 in the Swedish compulsory school. Large differences were found among the 30 schools studied. Often teaching only consisted of mediating facts or experiments made by the teacher. The students rarely got an opportunity to learn through systematic investigations. Less than 60% of the lessons observed involved activities were the students to large extent met scientific methods. Also, good examples were found in schools were the teachers consciously let the students make hypotheses about what will happen in an experiment. In many schools the teacher use readymade teaching packages. Generally, they consist of instructions for how series of lessons with different themes may be planned and performed by using the material included. Some of the packages also include education of the teachers. According to the School Inspectorate teachers without education in science claim that with help of the packages they have been able to teach in all areas of school science. Teachers sometime use the packages as inspiration, but chose other methods for their teaching. The purpose of this study was to examine how students in primary school use concepts and to study their conceptual development during two sequences of lessons, primarily based on the student’s own documentations. Written diaries and reports of the students were analysed in order to construct their conceptual profiles and to follow their development. The assessment of the performances in relation to the knowledge requirement evaluated students ability to discuss simple questions concerning chemical processes, plan simple experiments and formulate simple question. The study shows that observations, discussions, and written documentation of simple experiments promotes conceptual development.
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| 8. |
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| 9. |
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| 10. |
- Heidmarsson, Starri, et al.
(författare)
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Classification of lichen photomorphs
- 1997
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Ingår i: Taxon. - : Wiley. - 0040-0262 .- 1996-8175. ; :46, s. 519-520
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Tidskriftsartikel (refereegranskat)
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