Program Module #4: Electronics

Program Module #4: Electronics (Day 1 of 3)

 

[Note that the quizzes provided are named based on the material they cover, and NOT on the day that they are given.  I.e. The quiz labeled “Quiz – Electronics (day 1)” is the quiz that asks about the material covered on day 1 of the electronics module, and is meant to be given on day 2 of the electronics module.]

 

Materials needed every day:

  1. Nametags
  2. Markers
  3. Scissors
  4. Tape
  5. Safety glasses
  6. Calculators 
  7. Student notebooks 

 

Materials List:
1.)    Multi-stopper plastic tube demonstration device

2.)    Cloth towel/rag
3.)    Circuit board examples

4.)    LEDs (red, orange, yellow, green, blue)  (15-20 of each)
5.)    Soldering irons/solder/solder removing tool (1 soldering iron per 2 students)

6.)    Resistors (1 KΩ, minimum 5*number of students)

7.)    Capacitors (minimum one for each student)

8.)    9V battery clips (minimum one for each student)
9.)    9V batteries (minimum one for each student)
10.)  Voltmeters (7-10)
11.)  Custom Made Circuit boards (minimum one for each student)

12.)  Wire clippers (7-10)


Pre-Class Preparations:
1.)    Prepare all copies of handouts and quizzes

 
Lesson Plan:
Objectives:
1.)    Provide students with an understanding of voltage, current, and resistance as it relates to Ohm’s law.
2.)    Provide a real application of voltage as it relates to flowing water.
3.)    Have students measure voltage and resistance as it relates to LED circuits.
4.)    Students will build an LED circuit and explore the concepts learned while learning the importance of a closed circuit as it relates to polarity and soldering.
 
Agenda:

1.)    Big picture talk (5 minutes)
2.)    Administer quiz (10 minutes) 

3.)    Demo - Stopper and flowing water apparatus (5 minutes)
4.)    Lecture - Voltage, current and resistance (10 minutes)
5.)    Activity - Measuring voltage and resistance of an LED circuit (30 minutes)
6.)    Activity - Build an LED circuit (30 minutes)
 
Additional Information about agenda items:
 
3.)    Perform Demo.  The apparatus described is a large cylinder filled with water, and has stoppers at multiple heights along the cylinder.  Students watch the flow of water through each stopper individually and make conclusions about the rate of flow of water and how much “work” the water can do.  Which hole will have the water do more work……the hole higher up on the cylinder or the hole further down?  The potential for doing work or the height of the water is then related to voltage.  Resistance is then demonstrated by showing the water flowing out through a hole with a towel pressed or stretched over it (making sure the water can still flow through).
4., 5., 6.)  Students will likely not have enough work time to complete the construction of their circuits.   There will be more time for this activity in the day 2 schedule, and they may have some extra time after the field trip on day 3.  Tools and materials for this assignment should be available throughout the module, and not just on day 1.

 

Handouts and presentations:

1.)     Notebook pages – Electronics

2.)     Quiz - Electronics (day 1)

 

Program Module #4: Electronics (Day 2 of 3) 

 

Materials needed every day:

  1. Nametags
  2. Markers
  3. Scissors
  4. Tape
  5. Safety glasses
  6. Calculators 
  7. Student notebooks 


Materials List:
1.)    Holiday light strings (10-15)
2.)    LEDs (any color, 15-20)
3.)    Function generators (7-10)

4.)    Wire trimmers/snippers (7-10)


Pre-Class Preparations:
1.)    Copies of all Handouts and quizzes
 
Lesson Plan:
Objectives:
1.)    Provide students with an explanation of AC and DC current
2.)    Students will understand the directional nature of AC/DC current
3.)    Students will build an apparatus to prove the nature of electric current as it relates to AC/DC current
4.)    Students will recognize the difference between incandescent and LED light bulbs—both through energy

         and directionality.
5.)    Students will gain an understanding of the engineering difficulties involved in building and constructing an actual computer.
 
Agenda:
1.)    Big picture talk (5 min)

2.)    Administer quiz (10 min)
3.)    Introduce concepts of AC/DC current (10 minutes)
4.)    Continue work on LED circuits (30 min)
5.)    Perform Holiday Light experiment (30 min)
 
Additional information for Agenda Items:
 
 

  1. Quiz - Electronics (day 2)

 

Program Module #4: Electronics (Day 3 of 3)

Materials needed every day:

  1. Nametags
  2. Markers
  3. Scissors
  4. Tape
  5. Safety glasses
  6. Calculators 
  7. Student notebooks 

Agenda:
1.)    Big picture talk (5 min)

2.)    Administer quiz (10 min)
3.)    Field trips  (55 min)

Special Note:  This day is reserved for a field trip to the Chemistry building basement for activities related to an SEM and an AFM microscope.  It is recommended that the SEM activities include specimens that are special to the students; examples may include a human hair from one of the students or a material that has been/will be examined through other methods.  Specimens are obviously restricted by which module(s) has(have) been covered first and how much in advance the specimens can be given the scientists in charge of preparing the samples for the SEM.  The AFM visit allows for discussions of topics such as smoothness and resolution, while both instruments demonstrate the difficulties of small scale measurements.   Following the tours, students will likely have ~15 minutes available to finish up any remaining project work.

Handouts and Presentations:

1.)     Quiz - Electronics (day 3)