11.   If there is still any doubt, the LIFESPAN validation program can be used to check for self consistency of the database.

12.   The program CASP was used for this purpose.

13.   Such programs have been used in a number of curricular areas.

14.   For example, the PUDDLE program is used with pupils to examine the effects of water on the land in terms of rainfall and landscape change.

15.   The pupils learn by trial and error, by using the programs in context.

16.   The work done by pupils in using software programs will ha be assessed in some formal manner.

17.   The amount of preparation which is required before the program can be used is important.

18.   Some documentation gives advice on how to use a program, for example as a visual aid, as a student resource or as part of a group activity.

19.   Teachers and librarians need to know how long it will take for the teacher or librarian and pupils to learn how to use the program.

20.   The fragmentary DNA sequences from the random sequencing procedure were compiled using programs DBAUTO and DBUTIL.