Aim:
The purpose of this lesson is to introduce seventh grade science students to the structure and function of the system responsible for carrying out the life process of getting energy.
Rationale:
One of the objectives of the Chicago Academic Standards and Frameworks guide require students to analyze the structures and functions of the human body.
Audience:
Seventh grade students are the intended audience.
Pre-requisites:
Students should be able to read near grade level and read and interpret diagrams. It is not a prerequisite, but it would be helpful if the students knew the structual arrangement of a multicellular organism (cells, tissues, organs, organ systems, and organism). Knowledge of the six classes of nutrients (carbohydrates, fats, proteins, vitamins, minerals, and water) would also be helpful.Subject Matter:
This lesson begins the investigation of one of the organ systems of the human body--the digestive system. All organisms are able to carry out the life process of getting energy. Both structure and functions are intergrated in the content material but the intent is to have students first become familiar with structure of the organ system that changes food into a form the body can use.
Goals and Objectives:
Students should be able to define digestion, explain the function of the digestive system, name the organs of the digestive system, and list in correct order, the path food takes through the digestive tract. Students will also label a blank diagram of the anatomy of organs of the human digestive system.
Instructional Plan:
The focus of the first lesson will be on the organs of the digestive tract and digestive system.
First, the students are given a brief review of the definition of an organism and the five life processes.
Students will read about digestion and the digestive system as they examine various content pages containing diagrams of the human digestive system.
Students will interact by labeling blank diagrams and completing a matching exercise. Students are to complete exercises designed to meet the objectives of each lesson.Following lessons will focus on both the mechanical and chemical digestion of food as it is prepaired for absorption into the circulatory system. Naturally, information of structure and function is intergrated.
Materials:The student will need a printed copy of the anatomy of the human digestive system and a pencil.
Assessment and Evaluation:
This will be based on the students' ability to write the definition of digestion, list the organs of the digestive tract in correct order, name additional organs included in the digestive system, and label a blank diagram of the anatomy of the human digestive system.