4. STEDE (2001-2004) ( Science Teacher Education Development in Europe )

5. Group 10a: The use of distance learning in science teachers education.

16. 238 U 222 Rn 4.5*10 9 lat 4.2MeV 234 U 234 Pa 234 Th 230 Th 3.8 dni 5.5MeV

18. cavities in walls gaps in florboats construction joints cracks in walls cracks in solid floor graps around service pipes

23. I. RADONET PROJECT for teachers and their students

24. 2. Method of studies - passive - TASTRAK detectors 3. Time - 3 lessons 4. Students’ tasks 5. Tasks for the teacher 6. Appendix

25. I. RADONET PROJECT for teacher and their students

27. 6. Appendix

28. I. RADONET PROJECT for teacher and their students 6. Appendix

29. I. RADONET PROJECT for teacher and their students 6. Appendix

31. „Radon map” of Torun

32. Radon in our homes Bq/m 3 Number of measurements

33. Map of radon concentration in different regions of Poland

34. II. Ionising radiation of radon and his daughter in electric and electromagnetic fields

35. 2. Experimental setup The scheme of experimental setup

36. 3. The results of investigations Comparison of radon concentration in different places in Torun

37. 3. The results of investigations TASTRAK plates exposed to high electric fields with different electric field line distribution

38. 3. The results of investigations The dependence of radon/radon daughters concentrations as the function of distance from the source of positive polarised electric fields 3000, 5000, 7000 and 9000 V

39. 3. The results of investigations The dependence of radon concentration on humidity of the air