The images frequently used in foreign language teaching serve as triggers for brainstorming both at the beginning of each teaching unit and as the first activity of the pedagogical sequences. It is thanks to this authentic material that the learner can become familiar, in the stage of prediction, with the theme of the teaching unit. The non-linguistic and polysemous feature of these visual aids helps the teacher to create a relaxed atmosphere in which learners can express themselves freely. The textbook designers take into account the exploitation of these images in the first stage of the access phase because of their nature mentioned above. This article aims to show the effectiveness of various types of images in the French textbook Saison 1 and their contribution to the teaching of French as a foreign language. To do this, data collected from French students through three tests developed by the researcher were evaluated, and the results obtained were discussed.