In this animated object, learners examine how current, voltage and the discharging capacitor of a series RC changes during 5 time constants. A brief quiz completes the activity.

Learners examine the symbols and values that control surface roughness, waviness, and lay. A brief quiz completes the object.

In this animated and interactive object, learners use a color code to understand the operations of a hydraulic circuit. A brief quiz completes the activity.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.

In this learning activity you'll explore how units in the metric system are related to each other and practice locating measurements on a metric line.

This animated guide presents an FAA map and aerial photos showing various areas of interest to student pilots enrolled in flight training at FVTC Aviation at Wittman Regional Airport in Oshkosh, WI. The airport is the site of the annual Experimental Aircraft Association's AirVenture Oshkosh. This object has sound.

In this interactive and animated activity, students follow the steps for proper digital multimeter placement for resistance, voltage, and current.

In this interactive object, learners follow six steps for analyzing a process in a manufacturing setting. This activity includes a drag-and-drop exercise and textboxes where learners post their ideas.

The learner reviews steps in analyzing a process and applies them to a situation in his/her own work or personal life.

Put the parts of the respiratory system in the correct order of air flow from the outside to the inside of the body.

This game has students find the parts of the scientific method within given scenarios.

Learn basic facts about chicken processing!

IELTS Standard