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.

In this activity you'll practice designing a table in second normal form.

In this learning activity, you'll be introduced to Third Normal Form and you'll design a table following these rules.

In this learning activity you'll explore and practice the first step in normalizing a database.

In this animated activity, learners examine the operation of normally open and normally closed valves used in hydraulics. A brief quiz completes the learning object.

In this learning activity you'll identify and calculate the area under the normal curve specified by given z-scores.

In this learning activity you'll calculate the numeric value of an area when given the z scores.

In this learning activity you'll use the Empirical Rule to calculate the percentages of data between two data points.

In an interactive exercise, learners identify the human body sites that harbor a normal resident flora and the sites that are sterile.

In this learning activity you'll examine how database normalization eliminates redundancy and helps maintain consistency within a relational database.

Learners examine a CBC and study the functions of blood cells, the normal range for each item on the CBC, and possible reasons for increases or decreases from the normal range.

Learners examine four stages of rheumatoid arthritis and compare them to the normal synovial joint.

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.

This screencast will help the student identify normal blood cells and their functions. This will include the identification of red blood cells, five types of white blood cells, and platelets.

In this activity, the learner will understand what denormalization is and when it's an appropriate strategy.

In this animated object, learners examine the signals produced at the N.O. (normally open) and N.C. (normally closed) outputs of sourcing and sinking four-wire sensors. A brief quiz completes the activity.

Learners examine how a ladder logic circuit becomes latched when a normally open pushbutton is momentarily pressed.