Abstract: A target sheet for use on a bowling lane and a method of training a bowler. The target sheet comprises pressure-sensitive microscopic capsules adapted to create a visible image when applying pressure thereon. Aligning indicia on one side of the sheet is used to provide reference points to gauge a ball's trajectory thereover and to align the sheet with boards on the lane. The second side of the sheet is provided with an adhesive adapted to fix the sheet to a bowling lane. The method involves fixing the sheet to a bowling lane, rolling a ball thereover, and comparing the image formed by the ruptured capsules with the reference points to determine the lane board corresponding to the image.