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  • Video 
    The Psychology Behind Irrational Decisions

    The Psychology Behind Irrational Decisions

    Often people make decisions that are not "rational" from a purely economical point of view — meaning that they don't necessarily lead to the best result. Why is that? Are we just bad at dealing with numbers and odds? Or is there a psychological mechanism behind it? Sara Garofalo explains heuristics, problem-solving approaches based on previous experience and intuition rather than analysis.

    Subjects:
    Psychology
    Keywords:
    Decision making
    Resource Type:
    Video
     
  • Video 
    The Psychology of Post-Traumatic Stress Disorder

    The Psychology of Post-Traumatic Stress Disorder

    Many of us will experience some kind of trauma during our lifetime. Sometimes, we escape with no long-term effects. But for millions of people, those experiences linger, causing symptoms like flashbacks, nightmares, and negative thoughts that interfere with everyday life. Joelle Rabow Maletis details the science behind post-traumatic stress disorder, or PTSD.

    Subjects:
    Psychology
    Keywords:
    Post-traumatic stress disorder
    Resource Type:
    Video
     
  • Video 
    The Psychology of Inequality And Political Division

    The Psychology of Inequality And Political Division

    "If we want to fix our politics, we have to do something about inequality," says social psychologist Keith Payne. Showing how economic inequality changes the way people see and behave towards one another, Payne helps explain the rise of the political polarization that's slicing up society -- and challenges us to think twice the next time we dismiss someone for the sake of politics.

    Subjects:
    Sociology and Psychology
    Keywords:
    Social psychology Equality
    Resource Type:
    Video
     
  • Others 
    Dilution of Hydrochloric Acid

    Dilution of Hydrochloric Acid

    In this interactive object, learners examine how to properly dilute hydrochloric acid.

    Subjects:
    Chemistry
    Keywords:
    Hydrochloric acid
    Resource Type:
    Others
     
  • Others 
    Calculating Gas Density from Standard Molar Volume

    Calculating Gas Density from Standard Molar Volume

    Learners calculate gas density from the standard molar volume and observe how the density increases with the increasing molecular weight of the gas.

    Subjects:
    Chemistry
    Keywords:
    Natural gas -- Measurement
    Resource Type:
    Others
     
  • Others 
    Gas Volume and Molar Amount

    Gas Volume and Molar Amount

    In this brief object, learners examine the direct relationship between the volume of a gas sample and the number of moles of gas. A problem is presented so students can test their knowledge of Avogadro's Law.

    Subjects:
    Chemistry
    Keywords:
    Natural gas -- Measurement
    Resource Type:
    Others
     
  • Others 
    pH and Its Basic Principles

    pH and Its Basic Principles

    In this animated object, learners view hydrogen and hydroxide ions in a solution. A brief quiz on the basic principles of the term pH completes the activity.

    Subjects:
    Chemistry
    Keywords:
    Hydrogen-ion concentration
    Resource Type:
    Others
     
  • Others 
    Solubility of Ionic Compounds in Water

    Solubility of Ionic Compounds in Water

    Learners view movie clips to determine the solubility of two ionic compounds. They also examine a solubility chart and predict the solubility of compounds.

    Subjects:
    Chemistry
    Keywords:
    Chemical reactions Solubility
    Resource Type:
    Others
     
  • Others 
    Molarity

    Molarity

    Students solve a molarity problem in a drag and drop exercise.

    Subjects:
    Chemistry
    Keywords:
    Chemical reactions Solution (Chemistry)
    Resource Type:
    Others
     
  • Others 
    The Kinetic Theory of Gases

    The Kinetic Theory of Gases

    In this animated activity, learners examine what gases are composed of and how their particles interact. They also consider several assumptions that form the basis for the Kinetic Theory of Gases.

    Subjects:
    Chemistry
    Keywords:
    Kinetic theory of gases Gas dynamics
    Resource Type:
    Others