Scientific literacy vs. black boxes: With reference to the design of student laboratory experiments

1990 ◽  
Vol 67 (8) ◽  
pp. 692 ◽  
Author(s):  
S. H. Bauer
Keyword(s):  
Scientific Literacy ◽  
Laboratory Experiments ◽  
Black Boxes ◽  
Student Laboratory

The Effect of Microbial Activity on the Near and Far Fields of a Swiss Type b Repository

1991 ◽  
Vol 257 ◽  
Author(s):  
J.M. West ◽  
M. Cave ◽  
J.J.W. Higgo ◽  
A.E. Milodowski ◽  
C.A. Rochelle ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Laboratory Experiments ◽  
Steel Corrosion ◽  
Type B ◽  
Anaerobic Conditions ◽  
Long Term Stability ◽  
Black Boxes ◽  
Set Up ◽  
Deep Pits

ABSTRACTA series of batch laboratory experiments (‘black boxes’) were set up to study the gross effects of microbial activity on repository geochemistry, radionuclide sorption and the integrity of repository and host rock materials in a Swiss type B repository. The observed principal chemical exchanges and precipitations were confirmed by modelling and could be interpreted by excluding microbiological effects. However, mineralogical studies showed steel corrosion to be localised in deep pits with microbiology playing a possible role. Talc was precipitated in all of the cells which lowered ambient pH through removal of OH- causing dissolution of CSH compounds. This has implications for the long term stability of cements. Microbiology influenced far-field radiochemistry experiments in which added microbes increased Cs sorption particularly under anaerobic conditions.

Presentation of Laboratory Experiments through Motion Picture Films

1966 ◽  
Vol 22 (3) ◽  
pp. 723-730 ◽  
Author(s):  
Richard D. Walk
Keyword(s):  
Word Frequency ◽  
Motion Picture ◽  
Laboratory Experiments ◽  
Random Order ◽  
Inexpensive Method ◽  
Laboratory Courses ◽  
Student Laboratory ◽  
Exposure Conditions

Two motion picture films for use in student laboratory courses are described. The film on the “span of attention” showed 4 to 13 black dots on a white field at two exposure intervals for 100 trials. The film on the influence of word frequency on perception presented 15 words in a random order with the ascending method of limits, more adequate exposure conditions on each successive exposure until each word had been shown three times. Results from use in laboratory sections are given for each film. The laboratory film is an inexpensive method of increasing the range and depth of materials available to the laboratory instructor.

scholarly journals CLIL APPLIED TO PRE-UNIVERSITY CHEMISTRY TEACHING IN ENGLISH: BULGARIA AS A CASE-STUDY

2021 ◽  
Vol 4 (3) ◽  
pp. 7-17
Author(s):  
Lino Bianco ◽  
◽  
Irina Andonova ◽  
Anton Buhagiar ◽  
◽  
...  
Keyword(s):  
Second Language ◽  
Foreign Language ◽  
Bilingual Education ◽  
Scientific Literacy ◽  
Laboratory Experiments ◽  
Chemistry Teaching ◽  
The Republic ◽  
And Gender ◽  
Better Than

Content and Language Integrated Learning (CLIL) is bilingual education whereby students do not only study a second language, in addition to their native tongue, but learn a school subject in that foreign language. This study is based on the teaching of chemistry in English to Grade 9 students in the Republic of Bulgaria. Correlation exists between the performance of students in chemistry taught in English with their performance in English in Grade 8 and Grade 9. There is also a correlation between their performance and gender and regarding the second language chosen. In fact, students who opted for Russian and Spanish fared better than those who opted for German and French. More laboratory experiments at school, lessons incorporating interesting games, and stimulating interactive projects were recommended by students as useful tools to improve their scientific literacy.

scholarly journals Representing in the Student Laboratory

2018 ◽  
pp. 34 ◽  
Author(s):  
Brandon Boesch
Keyword(s):  
Science Education ◽  
Historical Development ◽  
Laboratory Experiments ◽  
Scientific Discipline ◽  
Philosophical Discussion ◽  
Representational Practices ◽  
Student Laboratory ◽  
To Come ◽  
Historical Developments

In this essay, I will expand the philosophical discussion about the representational practice in science to examine its role in science education through four case studies. The cases are of what I call ‘educational laboratory experiments’ (ELEs), performative models used representationally by students to come to a better understanding of theoretical knowledge of a scientific discipline. The studies help to demonstrate some idiosyncratic features of representational practices in science education, most importantly a lack of novelty and discovery built into the ELEs as their methodology is solidified when it becomes a widely spread educational tool within a discipline. There is thus an irreducible role for the historical development of ELEs in understanding their representational nature and use. The important role of the historical development of ELEs leads to an interesting way that educators can use ELEs as a means of connecting students to important historical developments within their disciplines.

scholarly journals Student laboratory experiments on erbium-doped fiber amplifiers and lasers

2000 ◽  
Author(s):  
W. Johnstone ◽  
Brian Culshaw ◽  
Douglas Walsh ◽  
David G. Moodie ◽  
Iain S. Mauchline
Keyword(s):  
Laboratory Experiments ◽  
Fiber Amplifiers ◽  
Erbium Doped ◽  
Student Laboratory
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