Steven Smith describes the talking about Photo card questions oral testing which is one of the three parts of the oral testing for the GCSE (General Certification of Secondary Education) in the UK. He describes the activity in which a student sees a picture, the student asks three questions about it and the teacher asks the student two surprise questions about it.. The pictures are based on common topics/themes. The same picture can be used at all levels of the language but the language sophistication increases. This type of testing eliminates pre-learned conversations/ presentations.
I have used a variation on these for many years, both when I taught public school and now that I teach college beginning Spanish. I have my students, in pairs, look a topical or thematic picture that they have never seen before. Without any preparation, they alternate asking and answering questions. For example, Student A asks a question, Student B answers it and asks Student A a different question, then Student A answers it and asks a different question. They talk for three minutes. I grade them on a combination on the total number of questions/answers times the number of different questions as long as their answers/questions are comprehensible and appropriate (answers the question). For example, if Student A asks four different questions and answers four questions, the score is (4 questions + 4 answers) x (4 different questions) = 8 x 4 = 32. If Student A asked variations on the same question such as How is the father? How is the mother? How is the son? and How is the daughter?, the score is (4 questions + 4 answers) x (1 question) = 8 x 1 = 8. Students learn that to do well in the question asking picture activity, they need to ask a wide variety of different questions just as they do in a real life conversation.
http://bit.ly/mlcomcult contains many communication activities for beginning to advanced students; they have high structure to help students. These activities are for all world languages and specifically for Spanish. 90 Mobile Learning Modern Language Activities contains many speaking activities for beginning students.