Students view a dc analysis of a base-biased NPN transistor.

Students read different definitions of "acids" and "bases." In an interactive exercise, they identify if a substance is an acid or a base.

Learners examine how CEC, base saturation, and soil pH work with each other to define plant nutrient availability.

In this interactive object, the learner matches various disorders to the acid-base disturbances they cause.

Students read and test themselves on the conditions that cause specific acid/base imbalances.

Students read about how acid/base balance affects a person's health. This activity includes animation.

Through the use of symbols and words, the learner reviews the etiologies, symptoms, and treatment of respiratory and metabolic acid-base disturbances.

Learners read a general description of the function and structure of leaves and examine drawings and microscopic views. A matching exercise completes the learning object.

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.

In this learning activity you'll examine a systematic method for converting a decimal number (base 10) into a binary number (base 2).

In this animated activity, learners examine a systematic method for converting a decimal number (base 10) into a hexadecimal number (base 16).

Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.

In this animated object, learners examine a systematic method for converting a decimal number (base 10) into an octal number (base 8).

Students read about the three categories of interest groups: Economic, grass roots and community-based, and civil and constitutional rights.

Students review the spelling rules for adding a suffix to a base word. They practice changing the "y" to "i" for some of the words that end in "y."

In this activity, you'll learn about the different data types associated with databases.

Users calculate the tonnage required to punch holes in a specific base metal. The formula to be used is provided along with the tensile strength for various metals. A calculator is required.

Students add suffixes to base words to form nouns in this interactive lesson.

Students use the Base Minus One Complement method to perform binary subtraction. This learning activity has audio content and immediate feedback.

Students use the Base Minus One Complement method to perform hexadecimal subtraction.