3D product design sketch of a classroom communication device inspired by stacked toy building cubes, placed on a student desk. The device consists of a compact base holding 3ā5 interlocking cube panels, each cube representing a different student message: āI need helpā, āI donāt understandā, āI have a questionā, āCan you check my workā, āFinishedā. MAIN FEATURE Each cube is rotatable around a horizontal or vertical axis. Front cube is active, showing the message āI need helpā. Other cubes are stacked behind or beside to demonstrate rotation/flick mechanism. MECHANISM Cubes connected via a hidden axle inside the stack, allowing individual rotation Exploded view: cubes, axle, base with locking tabs VIEWS Front view: Active cube front-facing, other cubes stacked behind Side view: Cube rotation alignment and stack depth Exploded view: Cubes, axle, base SCALE + CONTEXT Pen beside device for scale Notebook on desk Cubes sized for classroom readability STYLE Clean line drawing sketch, black ink + grey shading Active cube highlighted (light color) Labels: āRotating Cubeā, āAxle Mechanismā, āBaseā REFERENCE draw 2 cubes stacked on top of each other Ver mais