A simple way to think of Forward Kinematics is to recall a basic hierarchical tree structure. FK means that the movement goes from parent to child - ie: moving a shoulder would move the upper and lower arms, the elbow, wrist, hand, and fingers. Inverse Kinematics would then reasonably be the opposite, moving the the chain in reverse, child-to-parent - ie: moving a hand back causes the elbow to bend and the shoulder to move back.
A simple way to think of Forward Kinematics is to recall a basic hierarchical tree structure. FK means that the movement goes from parent to child - ie: moving a shoulder would move the upper and lower arms, the elbow, wrist, hand, and fingers. Inverse Kinematics would then reasonably be the opposite, moving the the chain in reverse, child-to-parent - ie: moving a hand back causes the elbow to bend and the shoulder to move back.