Imaging

Picture it in your head and turn it around

L1Beginner

Mental Manipulation: The Hole in the Folded PaperStart →
Mental Manipulation: Rotate and Flip the ArrowStart →
Mental Manipulation: Folding the NetStart →

L2Skilled

Mental Reconstruction: The Laundry at the Mouth of the AlleyStart →
Mental Reconstruction: The Office at 6 a.m. on SaturdayStart →
Mental Reconstruction: A Country Bus Stop in AugustStart →

L3Expert

Mental Simulation: From Pedal to Rear WheelStart →
Mental Simulation: After Pressing the Toilet LeverStart →