Polymers of carbohydrates are called polysaccharides. Sucrose and maltose are dimers.
Cellulose[local] consists of unbranched polymers of linked glucose residues arranged in linear chains, where every other glucose residue is rotated approximately 180 degrees. As a result, cellulobiose is the structural repeating unit of the glucan chains in cellulose. This is in contrast to other glucan polymers such as starch (α-1,4-glucan) and callose (β -1,3-glucan) where glucose is the repeating unit.
Cellulose is one of the most important primary plant products, yet its biosynthetic pathway [local] remains obscure.
Wood is made up of cellulose among other things. The chemistry of wood [local] is an excellent point of departure for a high school chemistry course.