The student knows that complex systems may not work if some parts are removed. The concepts of systems, parts of a system, and the role of various parts begin in Kindergarten and are reinforced throughout Grades 1-4. These concepts strands develop into more sophisticated concepts as students progress through Grades 6-8. A system is defined as a organized group of things or parts that form a whole. If one of the essential parts is removed, altered, or modified, the whole system may or may not function, have the same purpose or look the same.
Common systems are a wind-up toy or the digestive tract of a human.
These are systems because they have parts that are related. Other examples of systems are a volcano, a clock, a tulip plant, an aquarium, a bird cage, a flashlight, a circuit, or a human hand. The concept of a system exists in other areas such as language, business, government or the fine arts. The students will observe and manipulate a small flashlight. Through this experience, an everyday tool can help students focus on a system.