Students answer 10 questions in a sample exam. This exercise covers number systems, number conversion, logic gates, and combinational design. Feedback is provided.

Students answer five questions concerning magnetism.

In this interactive object, learners work 10 problems covering resistors, voltage, and current.

In this interactive object, learners work 11 problems covering atomic structure, conductors, and insulators.

Discover the fascinating intersection of veterinary science and human medicine in this module. "Can Animal Studies Predict Human Results?" Dive into groundbreaking research and ethical debates as we explore how animal testing influences the future of medical breakthroughs by unraveling the complexities of animal and human testing.

Students complete a sample exam for DC/AC I. It provides an overview of the material presented in the course.

A sample exam for DC/AC I, unit # 12 is presented to the students. This unit covers transformers.

In this interactive object, learners answer nine questions about inductors.

Learners answer six questions about transformers.

In this interactive object, students answer 10 questions covering Ohm's Law and Power Law.

Learners answer 14 questions about series-parallel DC circuits.

Learners answer eight questions about capacitors. Help pages are available.

In this interactive object, learners answer nine questions about series and parallel circuits. Immediate feedback is provided.

Atomic weights are used to convert the mass of a sample into the number of moles of the element in the sample and vice versa. Four examples are provided for practice.

This interactive learning object demonstrates how the moisture content is determined for a given sample of soil or aggregate.

Students read how to determine and calculate the saturated density for a given sample of soil or aggregate, based on the mass-volume relationship. Practice problems complete the activity.

Learners listen to an explanation of balance sheet basics for farm operations. They then determine how purchases should be listed in a farm record book and complete sample income and expense sheets.

Learners examine the concept of propagation delay within a TTL logic gate. The concept is explained with the use of timing diagrams and sample calculations.

Students read how to determine and calculate the dry unit weight for a given sample of soil or aggregate based on the weight-volume relationship.

In this animated activity, students read about weight-volume relationships within a given sample of soil or aggregate. They complete problems using a 3-phase diagram.