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Objective: To use an understanding of the subatomic particle composition of charged and neutral objects in order to identify how an object becomes charged in the manner that it does. If you miss a question, then you will eventually be given a very similar question. You can use the Help button at any time. 
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Charge and Charging
Particle Count 6 Questions Given the charge, compare the numbers of protons and electrons in the object.
Pick from among the three activities - Particle Count; Get into the Flow; and Analyze This!.
Get into the Flow Completed
Student Name:
Get into the Flow 6 Questions Given a description of an electrostatic process, describe the particle flow.
Get Started
Analyze This! Completed
Analyze This! 4 Questions Conduct a complete analysis of charging processes.
Particle Count Completed
Dataway! You have answered correctly. Click the Continue button to continue working on this Skill Building activity.
You have done it! You have successfully analyzed each of the situations in the Particle Count activity.
You have done it! You have successfully analyzed each of the situations in the Analyze This! activity.
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You have done it! You have successfully analyzed each of the situations in the Get into the Flow activity.
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O’ Drats! Your answer is incorrect. You’ll see a similar question very soon. Use the Help button to improve your chances of getting it correct. Click Continue.
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Activity:
#6
No, Stay Here
#5
Help Me!
Particle Count
#4
View Directions
#p+ > #e-
Check Answer
#p+ < #e-
#p+ = #e-
#3
To Main Menu
Progress Report
#2
#1
If you return to the Main Menu, then you will lose all your progress  on this activity. Are you sure you want to return to the Main Menu?
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Tap for Question-Specific Help
Protons were removed from the object.
Protons were added to the object.
Get Into the Flow
Electrons were removed from the object.
Test
Electrons were added to the object.
Electrons were added to it. 
Analyze This!
Protons were added to it.
Electrons were removed from it. 
Protons were removed from it.