Excavator Design Elements: The core design features a yellow construction excavator, symbolizing "construction, power, and engineering exploration," appealing to children's interest in construction vehicles.

3D Structure: The puzzle uses interlocking parts to form the body, tracks, and robotic arm, enhancing spatial awareness and three-dimensional construction skills.

Materials: Constructed from art paper and EPS foam, combining clear patterns with lightweight safety, making it suitable for children.

Yellow Visual Characteristics: The highly recognizable engineering yellow color is visually striking, helping children quickly identify and categorize the puzzle pieces.

Assembly Design Features: The interlocking slot structure requires no glue or tools, simplifying operation and lowering the barrier to entry.

Hands-on Skill Development: The assembly process requires observation of the structure and position, helping to improve hand-eye coordination and logical thinking skills.