For this students in mechanical engineering subject area were exposed to computer assisted instructions to satisfy following learning outcomes in computer aided design/computer aided manufacturing module.\ud i- Creation of drawing and design using Computer aided design\ud ii- Using data exchange format (DXF) to create numerical control file\ud iii- Final setup check of computerised numerical control machine\ud iv- Final manufacturing of the product using CNC\ud v- e ytilauQ valuation\ud The teaching and learning methodology consisted of a teacher delivering a lecture on the basics of the operation and then explaining entire operation with the help of a software coupled to the CNC machine. This enabled students to carry out repeated tests on the software till they felt confident in carrying out the above operations. At the end all students were examined for knowledge, comprehension, application, analysis, synthesis and evaluation. A typical flow chart explaining the above operations is shown below.\ud The results indicated that computer assisted instructions help students achieve learning out comes at all levels of cognitive domains. A correlation was seen between the pre test ability of students and the levels of cognition most affected. High pre test ability students gained both in high and low levels of cognition where as low ability students gained primarily in low levels of cognition namely knowledge acquisition and routine application
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