Challenge: A student in the expert group does not fully understand the material and therefore teaches the mosaic group incorrectly. Tip: The teacher must monitor the expert groups very closely while they are working. Before they return to their home groups, the teacher should conduct a quick check!
Challenge: Chaos and noise arise during the change of places (from the expert group back to the home group). Tip: Use visual or audio signals (e.g., a bell signals that time is up; at the second bell, students must move in silence).
Challenge: Dominant students take over the conversation in the expert group and explain things even on behalf of the quieter “experts.” Tip: Introduce a “talking stick.” In the home group, only the person holding the “stick” may speak; the others must raise their hands if they want to ask a question.
Challenge: The youngest children (ages 6–7) cannot read text independently in the expert group. Tip: Use objects and pictures.
Challenge: With younger children, it is more common that as they return to their mosaic group, they forget or do not fully remember everything that was discussed. Tip1: Prevent this problem. Ask the students to turn to the classmate sitting next to them in the expert group and tell them the 2–3 sentences they will later share with their home group. Repeating aloud helps solidify the information. Tip2: If this is already happening in the mosaic group, then the teacher should monitor the process, and if they see a stall, gently intervene in the mosaic group’s work. Don’t take over but guide the student’s attention; perhaps bring up a moment from the expert table (“Remember, you and Péter were just laughing about how…”).
