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This is a common approach and helps you to 'triangulate' ie to back up one set of findings from one method of data collection underpinned by one methodology, with another very different method underpinned by another methodology - for example, you might give out a questionnaire (normally quantitative) to gather statistical data about responses, and then back this up and research in more depth by interviewing (normally qualitative) selected members of your questionnaire sample.
As a starting point, two lessons were selected for analysis ..Data is often used to generate new hypotheses based on the results of data collected about different variables.One’s colleagues are often much happier about the ability to verify quantitative data as many people feel safe only with numbers and statistics.Twenty-two first year industrial trade students enrolled in a training course at a Sydney company participated in the experiment.The students were from a varied educational background but all had completed at least Year 10 of High School and all understood electrical principles at a basic level ..Students who had completed further studies were excluded from the study. The instructional materials used in the experiment consisted of information on three electrical safety tests that are performed on 240 volt electrical appliances using a volt meter..Subjective ratings were used in the experiment to measure cognitive load as they provide a powerful (measure of) the subjective experience of workload (Gopher & Braune, 1984: 529; see also Paas & van Merrienboer, 1993; 1994) since students have little difficulty assigning a numerical value to the imposed mental workload..An approach combining systemic functional linguistics and semiotic theory and methodology meant the present research could take into account the complexity of meanings generated in lessons, including meanings, that operate at the unconscious as well as the conscious level of awareness. Systemic functional linguistics requires a detailed and systematic analysis of text.Three schools were finally settled upon as the most appropriate sources for the variety of lesson situations required.However, often collections of statistics and number crunching are not the answer to understanding meanings, beliefs and experience, which are better understood through qualitative data.And quantitative data, it must be remembered, are also collected in accordance with certain research vehicles and underlying research questions.