The invention relates to the field of education supplies, in particular to an improved teaching whiteboard comprising an electronic whiteboard and a frame. An upper border of the frame is provided with an inner sliding channel and an outer sliding channel. The inner sliding channel is evenly divided by three stopping sheets into four sections. Each section of the inner sliding channel is providedwith a sliding block. The end, away from the inner sliding channel, of each sliding block is rotationally connected with one ordinary whiteboard. The ordinary whiteboards on all the sections of the inner sliding channel are located on the same plane and all located in front of the electronic whiteboard when being parallel to the electronic whiteboard. The four sections of the inner sliding channelare provided with sliding grooves correspondingly. The sliding block on each section of the inner sliding channel drives the corresponding ordinary whiteboard to slide to the outer sliding channel through the corresponding sliding groove, and then the ordinary whiteboard is connected with the outer sliding channel in a sliding manner. When the ordinary whiteboards on the outer sliding channel donot abut against each other, each ordinary whiteboard on the outer sliding channel is rotated enable the front side face or the back side face of the ordinary whiteboard to face the electronic whiteboard and be parallel to the electronic whiteboard, and the ordinary whiteboards return to the ordinal inner sliding channel through the corresponding sliding grooves. According to the improved teachingwhiteboard, the ordinary whiteboards can rotate, the front side face or the back side face of each ordinary whiteboard can be used for writing, and therefore the writing area is increased.