Back-to-Back Description

Pairs sit literally back-to-back. One holds a picture, diagram, or object description; the partner holds only a blank sheet. The holder describes; the listener reconstructs by drawing, writing, or arranging shapes. The inability to see means every detail must be negotiated through language alone.

Procedure

1. Arrange chairs in pairs, back-to-back, so partners cannot see each other's paper.
2. Student A receives the source: a simple picture, a diagram, an arrangement of shapes, a floor plan, or a short scene description.
3. Student B receives a blank sheet (and a pencil, or a set of matching shape cut-outs).
4. Student A describes the source step-by-step. Student B may ask clarifying questions but may not peek: How big is it?, Is the circle to the left or to the right of the square?, How far apart are they?.
5. When Student B declares the reconstruction complete, pairs turn around and compare.
6. Debrief the gaps: which features were misrepresented, and what language would have prevented the miscommunication?

Why it works

The back-to-back arrangement eliminates gesture, facial expression, and shared gaze — the same non-verbal crutches that let learners succeed in many information-gap tasks despite vague language. Stripped of those, learners must produce precise spatial language (above, below, in the top-left corner, three centimetres to the right of…), precise quantification (roughly, about, exactly), and precise clarification phrases (Do you mean…? Let me check…). The resulting errors are diagnostic gold for follow-up work.

Variations

• Arrangement task: Student A has coloured shape cards in an arrangement; Student B has identical cards loose. Student B must reproduce the arrangement.
• Object description: Student A describes a household object in detail; Student B guesses what it is. Good for abstract nouns.
• Sequence description: Student A holds a picture story (4–6 frames); Student B reconstructs the story on the blank sheet, then they check for narrative accuracy.

Tips

• Simpler source material produces richer language. A complex diagram collapses into confusion; three shapes in a specific arrangement produces an intense focus on prepositions and proportions.
• Monitor silently. Note the exact breakdowns — left vs right, square vs rectangle, under vs below — for immediate remedial work afterward.
• Pair this with Describe and Draw for a sequence that scales from face-to-face to the harder back-to-back version.