Abstract: A kid learning instrument with rotating wheels has a plurality of operation rotating wheels and a control rotating wheel inserted on a post-shaped main body; a plurality of different figures or words are annularly disposed on external surfaces of the operation rotating wheels and the control rotating wheel; the main body is disposed with a battery chamber, a circuit board, a speaker and an operation switch; turning the control rotating wheel to a certain position, a kid rotates the operation rotating wheels to select or match the figures or words disposed thereon and activates an operation switch inside the main body to enable a speaker to make certain set sounds according to different matching situations so as to provide multiple variations and audio-visual connections for achieving a learning effect.

Abstract: A self-teaching book for children having a number of questions and a plurality of electronic teaching units on which a plurality of answers corresponding to each question are carried for the user to choose from. Each electronic teaching unit has seven superimposed layers, the arrangement of which is an answer sheet, an upper conducting layer, an upper insulating layer, a source layer, a lower insulating layer, a lower conducting layer and a protective covering. A plurality of slots are respectively arranged within the upper and lower insulating layers to permit the contact between the source layer and one of the upper and lower conducting layers to activate an electronic device.