The Haworth projection allows drawing the hemiacetal shapes in the plane. In the case of furanoses we have already used this notation in the previous examples, so I will draw an example of a pyranose in that projection.

The hydroxyls that are oriented downwards in the chair are placed in the vertical and downward projection. The hydroxyls that are oriented upwards in the chair are placed vertically and upwards in the projection.

Let's look at the Haworth projection of aD-glucopyranose.

a -D-Glucopyranose

Haworth projection of a -D-Glucopyranose