In this animated activity, the learner examines how a 74150 IC multiplexer and a 74154 IC demultiplexer work together when their data select lines are connected to the same input devices.

In this interactive object, learners view the icons and symbols used most frequently in value steam mapping. A matching activity completes the object.

Learners examine a 555 integrated circuit, which functions as a one-shot monostable multivibrator, and then test their knowledge. Immediate feedback is provided. Animations are used to show the sequential operations.

Instructions on how to wire an integrated circuit are given.

Learners observe the animated operation of an astable mulivibrator using a 555 IC (integrated circuit) chip and external components.

In this screencast, learners examine the internal elements of a 555 IC and their operation.

In this interactive object, students read about organizing data in a tabular form. A brief quiz completes the activity. This is the first in a series of six learning objects.

In this fourth part in a series, learners follow the steps of the “mathemagician” to examine three numerical curiosities: Be a Psychic by Predicting Birthdays, Predict a Card with Mind Reading, and Predict the Three Die Values Your Opponent Has Rolled. Learners will also study palindromic numbers and look at two alphametric puzzles.

Learners examine a series-parallel circuit and solve 14 problems related to voltage, current, and power. A help screen is provided.

Learners read definitions of the terminology associated with algebraic operations and then follow steps to use the fundamental laws of division to simplify algebraic expressions.

The learner will be able to see bacteria growth on common medical office surfaces.

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.

This primer introduces the student to the correct method of using the log function on a TI-86 calculator.

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

This primer introduces the student to the correct method of using complex reciprocals in a TI-86 calculator. The solution of total impedance of a parallel circuit in rectangular form is shown.

In this activity, students practice recognizing the different types of noise in the communication process.

In this animated object, learners follow a process for simplifying radicals.

In this interactive object, learners sort veterinary antiparasitic medications into categories.

In this learning activity you'll locate the countries of Central America on a map.

In this video, learners view the parts of an animal cell and its organelles.