There are two types of shapes: geometric and organic. Geometric shapes have names and most have straight sides. Organic shapes have no names and curvy sides. Organic shapes might remind you of other things, like leaves.
Artists, like Alexander Calder, use organic shapes to create artworks. Alexander used organic shapes to create very large, moving sculptures called mobiles. He also used straight and curvy lines, too!
We will use organic shapes and curvy lines to create moving sculptures like Alexander Calder.