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 interactive and animated object, learners examine how dc voltages develop across capacitors that are connected in series and in parallel.

In this animated and interactive object, learners examine the red blood cell's life cycle and function. A brief exercise completes the activity.

Explore what passive transport diffusion is and how it moves water through a membrane.

Learners examine how metal detectors function. This object includes animation and sound.

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how resistance decreases in a parallel circuit as branches are added.

The learner will understand how to properly use a fillet gage to measure weld size.

The learner examines what it means to listen respectively and how to become a better listener.

In this animated object, learners follow an analogy of water flowing through pipes and valves to see how current increases in a parallel circuit as branches are added.

In this animated object, students observe how ATP energy is used to move substances across the cell membrane from an area of lower concentration to an area of higher concentration and when something too large needs to get in or out of a cell.

Learners examine the function of each part of a microscope and follow step-by-step instructions on how to focus on a specimen. They also review the proper use and care of a microscope and test their knowledge in two drag-and-drop exercises.

In this learning activity we’ll learn how the web works by using a Request and Response algorithm.

In this interactive object, learners review how to read a caliper. They then test their skills with eight practice questions.

In this learning activity you'll observe how switches are used in local area networks to increase data transmission speeds.

In this learning activity you'll play "How to Really Be a Millionaire" to learn the basics of accumulating wealth.

In this animated activity, learners examine how a voltage is induced into a conductor when the conductor cuts across magnetic flux lines. They also view the four factors that determine how much voltage is generated. A brief quiz completes the learning object.

Learners identify negative roles, match statements characteristic of each role, and relate how they have handled negative teams.

In this animated object, learners examine what anxiety is, how it affects people, and ways to manage it.

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

In this learning activity you'll explore how computers connected on a network use Ethernet technology.