TKT is a test developed by Cambridge ESOL for English teachers to speakers from other languages. Concepts related language and language use, and the background to and practice of language teaching and learning. TKT has 7 modules:
The modules can be taken together or separately in any order, except TKT Practical. Each module has 80 questions.
Spratt, M., Pulverness, A., & Williams, M. (2011). The TKT Course Modules 1, 2 and 3. Cambridge ESOL.