Diabetes and Your Circulatory System: The story of the lost limbs.

Transcription

1 Diabetes and Your Circulatory System: The story of the lost limbs. Dr. Falak Almiladi William H Brown Math and Science Academy IIT Research Mentor: Dr. Eric Brey This material is based upon work supported by the National Science Foundation under grant No. EEC Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

2 Overview The module s objective is to familiarize the students with the structure and function of the circulatory system and to illustrate the connection with other systems in the body. The target audience are 7 th grade students. Four 45 minute periods will be used to deliver the module which includes 3 activities. The design theme revolves around introducing the students to inquiry based learning and incorporating ethical issues

3 Key Concepts and Process Skills Constructing models is one way to understand and explain scientific concepts. The human organism is composed of organs. Different parts of an organ interact to perform specific functions with one or more systems. systems within the human body are named according to the function they perform. The blood is a part of the circulatory system whose function is to transport gases (oxygen and carbon dioxide), nutrients and wastes within the human body.

4 Key Concepts and Process Skills Cont. During respiration, humans take in oxygen and release carbon dioxide. Lungs provide surface area for oxygen to enter and carbon dioxide wastes to leave the blood. Organs use the oxygen and nutrients carried by the blood, and in turn produce wastes such as carbon dioxide. Blood is pumped around the body by the heart. The liver, kidneys, and large intestines play roles in waste removal while the stomach and small intestines play roles in providing nutrients to the body.

5 Connections to Illinois and National standards The following standards are covered by the module: A, Science as inquiry IL. Goal 11 C, Life Science IL. Goal 12 E, Science and Technology IL. Goal 13 F, Science in personal and social perspectives IL. Goal 13 G, History and Nature of Science IL. Goal 13

6 Background The teacher requires the following basic knowledge to present the module : Human Body Systems The cell theory Anatomy and physiology Experimental design the Scientific method Modeling designing and engineering models

7 Background Info Cont. Composition of atmospheric air (%) Composition of inhaled air (%) Composition of exhaled air (%) Nitrogen Oxygen Argon Carbon dioxide Water vapor

8 Background Info Cont. The human body is composed of several systems working together. Each system is defined by the function it performs. The following is a list of these systems: The respiratory system The reproductive system The nervous system The cardiovascular system The digestive system The excretory system The lymphatic system The skeletal system The muscular systems The immune system The endocrine system The integument system

9 Activities The following activities were designed to illustrate the main ideas of the module The Invisible Consumer Glucose as an energy source for living things It is Red and Blue and goes in circles Gas and Nutrients Exchange Why is it Gone? Leg Prosthesis

10 The Invisible Consumer In this activity, the students will design an experiment to investigate the use of glucose as an energy source for cells The students will then quantitatively measure the amount of carbon dioxide produced by the cells

11 Example 1

12 Red and Blue and Goes in Circles The students model the path of blood as it travels through the human circulatory system They will use 4 different colored beads Red, oxygenated blood Blue, deoxygenated blood White, nutrients Green, Waste products Students will use the following template to do this activity after complete class discussion.

13 Example 2

14 Heart Diagram Source: Chung, M.K., and Rich, M.W. Introduction to the cardiovascular system. Alcohol Health and Research World 14(4): , 1990

15 Why is it Gone? In this activity, the students will be designing a leg prosthesis using craft sticks and modeling clay. An example will be provided on how the prosthesis will look like in the end. The prosthesis will be supposed to balance a plastic doll.

16 Project Inquiry based learning will be implemented through class discussion of open-ended questions. The students design will be based on the available materials. Ethics will be presented through the students personal evaluation of nutritional and social issues.

17 Materials Instruction sheets Stop watch 2 Syringes Sugar solution Yeast suspension 1 inch plastic tubing Modeling clay Threads for beads 4 different color beads Beakers Craft sticks Sponges Paper towels Cardboard boards Work sheets

18 Assessment Students are assessed on their abilities to: Communicate scientific information Organize and explain scientific information Design and conduct investigation Interpretation of lab activities Collaborate as a group Stay on task, work together and accomplish task Understand concepts and applications Recognize and understand concepts

19 Module Development Plan The module will be developed according to the following schedule Week 1-2: Developing the module framework Week 3-4: Finalize the lesson plans and conduct a first run Week 5: procure materials and copies of instructions for a complete class Week 6: finish module and rehearse the presentation Week 7: RTE workshop