In this learning activity you'll explore the food pyramid and the recommended services.

In this screencast, learners examine the kinds of physical and chemical changes that occur in substances.

By the end of this module, you'll be able to:

- Identify actions that can reduce biosecurity risk

- Develop a biosecurity action plan for a farm

- Select the most cost effective strategies

Students practice identifying common elements from the periodic table by name or symbol.

In this screencast, we review the positions of metals, metalloids, and nonmetals in the Periodic Table and the general characteristics of each.

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.

Thousands of health and beauty products claim to be cruelty free - but do you know how to spot a fake? Test your knowledge and explore the exciting science that's delivering cutting-edge and better alternatives to animal testing in this interactive experience. Make decisions as both a beauty blogger and a research scientist as you navigate animal testing in the health and beauty industry.

Learners examine the circuitry in a DC variable speed drive that prevents the motor from running at 0 rpm or at maximum speed under certain conditions.

In this object designed for instructional assistants, learners read about the laws that pertain to student school records. Three case studies are presented and learners write about how they would respond in these situations.

In this animated object, learners read about the uses of nanotechnology. The sciences, engineering, electronics, and other disciplines converge in nanotechnology. Examples are given for applications in manufacturing, biomedicine, and environmental science. Concerns about possible environmental effects are discussed.

In this learning activity you'll analyze four newspaper editorial submissions and formulate your own letter.

In this module, you'll be able to :

- Identify five routes of infection

- Describe how diseases are transmitted in animals

In this learning activity, you'll explore the basics of prototyping for user experience design.

By the end of this module, you’ll be able to:

- List four categories of disease agent sources

- Discover conditions when disease transmission is likely to occur

- Describe the means of disease transmission in a given situation

Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.

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.

In this animated activity, learners study the principle behind an inductor producing a high momentary voltage while its magnetic field collapses. A short quiz concludes the lesson.

In this learning activity you'll apply knowledge about eustress to high and low stressors in your life.

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

Students use a map of Chicago to find their way to the Museum of Science and Industry. The activity offers practice in identifying directions on a map. A quiz completes the activity.