1. EBD Unit 1 Lesson One

2. Unit Objectives
Lesson 1: Exploring Technological Systems
Students will learn to:
Explain that new products and systems can be developed to solve problems or to help do things that could not be done without the help of technology.
Explain why the development of technology is a human activity and is the result of individual or collective needs and the ability to be creative.
Compare and contrast natural and human-made systems.
Describe how parts or components of a system work together to accomplish a goal.
Define the term “system.”
Make a two-dimensional representation of a technological system.
Disassemble a common product and identify the common systems and subsystems found inside.
Analyze precision, accuracy, and approximate error in measurement situations.
Contribute to a group endeavor by offering useful ideas, supporting the efforts of others, and focusing on the task

3. Selected Learning Objectives: Students will learn to:
Compare and contrast natural and human-made systems.
Describe how parts or components of a system work together to accomplish a goal.
Make a two-dimensional representation of a technological system.
Disassemble a common product and identify the common systems and subsystems found inside.
Analyze precision, accuracy, and approximate error in measurement situations.

4. Activity Highlights
Engagement: Pairs of students compare and contrast a natural system (human anatomy, including the following subsystems: respiratory system, cardiovascular system, skeletal system, digestive system, nervous system, and muscular system) with a human-made system (automobile, including the following subsystems: power train, electrical system, coolant system, fuel system, exhaust system, brake system, and steering system).
Exploration: Working in small groups, students analyze a home heating system.
Explanation: The teacher demonstrates the use of a systems model (graphic) to analyze a technological system, including input, process, output and, at times, feedback.
Extension: Students assemble and use a simple communication system to send and receive a message.
Evaluation: Student knowledge, skills, and attitudes are assessed using selected response items and rubrics for brief constructed responses and class participation.