The Friendship Meter

Reviewing Circuits

Name: ________________________

Requirements for Bulb to Light: _________________________________________________________________________________

Name: ________________________

Examples: _________________________________________________________________________________

Requirements for Bulb to Light: _________________________________________________________________________________

Examples: _________________________________________________________________________________

Logic of Friendship1. You can be my friend if you are trustworthy and loyal

and brave.2. You can be my friend if you are trustworthy and like

baseball or ice hockey.3. You can be my friend if you like cooking or baseball or

jazz music.

Friendship Meter Procedure

1. Brainstorming2. Logic Diagram3. Wiring Diagram4. Circuit Simulation5. Circuit Construction and Testing6. Presentation7. Reflection Paper

Brainstorming Procedure

1. Identify qualities of a good friend. Brainstorm a list of things that you find important in a good friend.

2. Identify possible materials you can use for the construction of your friendship meter.– All meters will be powered by a 9-Volt battery.– Holiday lights will be provided– At least one thing related to your program area must be

incorporated into your meter– At least one thing related to your “Friendship List” must be

incorporated into your meter

Logic Diagram Procedure1. Choose at least four traits that you want to use for your

Friendship Meter. You can choose more but you must have at least four.

2. Identify each trait as either exclusive (an and statement) or not exclusive (an or statement)

3. Write questions that clearly show the relationship between the trait and whether or not that person can be a friend.

4. Draw a diagram that shows how your exclusive statements relate to the other statements.

Wiring Diagram Procedure1. Design a wiring diagram for your Friendship Meter.

Wiring diagrams are a road map or blueprint to how to build the circuit.

2. Use the following symbols to assist in your diagram:

Wire

Switch Battery

Lamp

Circuit Simulations Procedure1. Test your Friendship Meter circuit using the following

website:

2. Use your circuit simulation to identify any errors in your wiring diagram. Correct any errors.

http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc-virtual-lab

Circuit Construction Procedure1. Construct your Friendship Meter using the materials

provided and any additional material you choose to provide.

2. Be sure to construct your Friendship Meter the way it is shown on your revised wiring diagram

3. Test your Friendship Meter to make sure the circuit works as planned

Presentation Procedure1. Test your Friendship Meter on at least four people.2. Try at least three other people’s Friendship Meters.

Reflection Paper Procedure1. Write a one to two page paper that addresses the

following:1. Your overall opinion of the project2. Whether you prefer to work with wiring diagrams, circuit

simulations, or actual circuit components. Explain your reasons.

3. A comparison between your Friendship Meter and the other meters that you tested

4. Ways to improve your Friendship Meter5. Ways to improve this project

Friendship Qualities Materials

Logic Diagram

Wiring Diagram

Planning Logic Diagram submitted on time

Logic diagram includes required inputs and outputs

Electrical circuit submitted on time

Electrical circuit includes all required switches and components

The logic diagram and electrical circuit match

Completion Project was completed on time.

Project required no more than five minutes of final preparation prior to demonstration

Project was madeentirely of junk drawerparts

Project was nolarger than 25 × 25× 25 cm

Projectaccomplished itsgoal for at leasttwo testers

Logic The logic employedat least one “or”condition.

The logic employed at least one “and” condition

The “or”conditionswere logicalalternatives

The “and”conditionswere logicalrequirements

A truth table wasprovided thatmatched the resultsof the testers

Reflection Five points are awarded for a written review of the project after it has been demonstrated in class

Input 1 This component used binary conditions.

The binary conditions wereclearly expressed.

The binary conditions worked as designed.

Input 2 This component used binary conditions.

The binary conditions wereclearly expressed.

The binary conditions worked as designed.

Input 3 This component used binary conditions.

The binary conditions wereclearly expressed.

The binary conditions worked as designed.

Input 4 This component used binary conditions.

The binary conditions wereclearly expressed.

The binary conditions worked as designed.

Output This component used binary conditions.

The binary conditions wereclearly expressed.

The binary conditions worked as designed.