References
- Assessment of Performance Unit . 1982 . Science in Schools, Age 11‐15 , Report No. 1‐3 London : HMSO .
- Comber , L. C. and Keeves , J. P. 1983 . Science Education in Nineteen Countries , Stockholm : Almquist and Wiksell .
- Nielsen , H. and Thomsen , P. V. 1985 . Physics in upper secondary schools in Denmark . European Journal of Science Education , 7 ( 1 ) : 95 – 106 .
- Shayer , M. and Adey , P. 1981 . Towards a Science of Science Teaching , London : Heinemann Educational Books .