In this screencast, learners examine the kinds of physical and chemical changes that occur in substances.

Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.

Learners review normal conditions that are associated with aging. Changes are highlighted in the cardiovascular, musculoskeletal, respiratory, gastrointestinal, urinary, reproductive, endocrine, nervous, and sensory systems.

Learners explore actions that can be taken to achieve a buy-in from employees when changes are to be made in the workplace. Students then rank the steps in the order that they should be taken.

In this learning activity you'll relate statistics on aging in America to the functions and dysfunctions created by these demographic changes.

Learners examine the changes in current and voltage values in a parallel circuit when open and short conditions develop. Ohm's Law calculations are shown, and a brief quiz completes the activity.

In this animated activity, learners examine how an electronic converter changes digital signals to analog signals. Sections of a synthesizer are identified, and the operation of a D/A converter is demonstrated.

Learners consider the changes inside a series motor that could cause it to break apart if the load was disconnected. A quiz completes the activity.

Learners examine the current and voltage changes in a series-parallel circuit as the resistance value of a rheostat is varied. Illustrations and calculations are included.

In this teaching and learning aid, the user can alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

In this scenario, learners put themselves in the place of a safety director at a local company. They watch video of an injury-causing incident and propose changes to company policies and procedures to try to maintain a safe environment.

In this animated object, learners examine how changes in pH affect the salt bonds in strands of hair.

In this animated object, learners observe the changes inside the DC shunt motor that could cause the motor to break apart when its field coil opens. A short quiz completes the activity.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Learners examine how voltages and currents vary in a series RLC circuit as the applied frequency changes.

In this learning object, learners will follow the illness of an 83-year-old woman, noting changes in her condition and ordering the appropriate medical imaging studies needed to inform her physicians about both her progress and her treatment options.

Explore how a goldfinch interacts with its environment and how it's affected by environmental changes.

Music Credit:

Title: Good Starts

Artist: Jingle Punks

Genre: Cinematic

Mood: Happy

Download: https://www.youtube.com/audiolibrary/...

In this interactive object, learners examine how voltages and currents vary in a parallel LC circuit as the applied frequency changes.

In this learning activity you'll explore normal distribution and enter values for the mean and the standard deviation of normally distributed data and observe the resulting changes in the shape of the normal curve.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.