REFERENCES
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- Office for Standards in Education . 1993a . Science: Key Stages 1, 2 and 3 Third Year, 1991–92 , HMSO .
- Office for Standards in Education . 1993b . Science: Key Stages 1, 2, 3 and 4 Fourth Year, 1992–93 , HMSO .
- Taylor , R. and Swatton , P. 1989 . Assessment Matters: No. 1 Graph Work in School Science , HMSO .