Educators and education students rely on evidence that is both quantitative (statistics, survey results, test scores) and qualitative (case studies, observation, personal experience). The following are some examples of evidence used in different situations:
If you are writing a research paper that compares different approaches to social studies education, you might rely on quantitative evidence such as the results of standardized tests from different school districts.
For a paper on child development, you might use a combination of personal observation and evidence from published case studies.
If you are keeping a journal of your student teaching experiences, your evidence would come from your experiences in the classroom and from the changes in your attitudes over time.
If you are creating a lesson plan, you will focus on your teaching objectives and explain how your plan will achieve those objectives.