Paper piecing is a technique used in piecing. The fabric is sewn to a paper pattern. When the block is completed, the paper is ripped away. This method is extremely accurate and easy. It is often a good method for beginning quilters to learn.
In the photos below, you can see the back and front sides of the pattern. The fabric is sewn to the paper. When the block is completed, the excess fabric is trimmed. You may leave the paper (if used as a wall hanging) or tear it away (if used as a lap quilt).
In the first photo you can see the paper pattern. The fabric is sewn on to the other side. The second photo shows the fabric being added to the pattern. This eventually gets trimmed to a small block. The last photo shows a small quilt that has been made using 6 paper pieced blocks. Borders were added to finish off the quilt.