Students will understand what a system is and how to analyze a system using SFM. Students will understand that SFM is a tool. Students will understand how SFM is used in engineering and why it is helpful when analyzing systems. Students will use SFM to analyze thermal regulation systems.

Teacher Note: If available, provide each table/group with a screw and a nail for this lesson.

View Slides: Is a Screw a System?

Teachers will provide a screw and a nail to each student. Look at both of the objects.

• Is a screw a system?
• Allow students to discuss…most students will say no, but the answer is yes. Click the slide to view the explanation

A set of things working together as parts/components of a mechanism or an interconnecting network

• Most students will see the screw as one thing - it is actually 5 different parts that work together. This will be explained in the mini lesson below.

Mini Lesson

View Slides: 1.3.3. SFM: Understanding a System

Today we will be learning more about the Structure, Function, and Mechanism (SFM) of systems and how SFM helps us to understand engineering systems using a screw as the example.

Teacher Note: NGSS Crosscutting Concept

• Screw vs Nail Analysis: 3 min
• You will use 1.3.3 SFM Analysis of a Nail to independently practice SFM analysis on a nail. (Slide 10)
• Class Discussion: Teacher will discuss answers with students. (Slide 11)
• Class Discussion: Complete Holding Objects Together as a group.

SFM Thermal Regulation Systems

View Slides: 1.3.3. Using SFM to Understand Thermal Regulation Systems

SFM can help us understand our client’s problem by analyzing different thermal regulation systems. Thermal regulation means maintaining a given temperature of an object for a period of time when the surrounding temperature is different. Analyzing existing thermal regulation systems may help us come up with ideas on how to help our client keep their meals at the correct and stable temperature.

• You will use the 1.3.3 SFM Analysis of Thermal Regulation Systems handout:
• Choose 2 examples of thermal regulation systems from the Thermal Regulation Systems slides.
• For each example, fill out the organizer with the structure, function, and mechanism.
• After completing your own SFM analysis of two thermal regulation systems, discuss with your elbow partner and add to your SFM notes.

View Slides: 1.3.3. SFM Extension: Fixed Pulley

View Slides: 1.3.3. SFM Extension: Water Faucet