sociable cscl environments - Open Universiteit
10. 2.5.1 Symbolizing and schematizing. 11. 2.5.2 Symbolizing equations. 12 .. These different roles of algebra can be associated with the various ways . algebra (where letters stand for given as well as unknown quantities) corresponds .. characteristics In spite of the increase in information available from research on
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The Wadden Sea, Germany and Netherlands - The Trilateral
of behaviour and ecology; the ways in which it might influence repro- .. island in day-time strongly increased, groups of terns suddenly appearing in relation to the date on which 10% of the sandwich tern population had started the chicks taken together as unknown died as a consequence of the same mortality.