The three basic shapes of bacteria are bacillus (rod-shaped), coccus (spherical-shaped), and spirillum (spiral-shaped).
This simple model allows students to build the three shapes of bacteria in a short period of time.
Prepare a chenille stem (formerly pipe cleaner) and a small bowl of play dough for each student.
After instruction on the 3 cell shapes of bacteria, prepare play dough and a chenille stem for each student.
Before the students begin, review the shapes by asking the students to recall the 3 shapes. Also, ask students how many cells a bacterium has. Remind them that all bacteria are one-celled organisms.
Middle School: Structure, Function, and Information Processing
LS1.A: Structure and Function: All living things are made up of cells, which is the smallest unit that can be said to be alive. An organism may consist of one single cell (unicellular) or many different numbers and types of cells (multicellular). (MS-LS1-1)
By Laura Hospitál
Return to Accessible Science main page.