At the end of this lesson you will be able to

- Explain what biosecurity means.

- Describe why biosecurity is important.

- Identify what kinds of disease agents we try to prevent or control with biosecurity.

- Demonstrate disease agent-host-environmental interactions that result in disease.

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

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

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.

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.

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

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

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

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

In this interactive object learners will sort veterinary urinary medications into categories.

In this interactive object, learners sort veterinary respiratory drugs into categories.

In this interactive object, learners sort parasites into divisions and helminth divisions. They also identify affected body systems.

In this interactive object, learners sort veterinary nervous system drugs into categories.

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

Learners sort veterinary gastrointestinal medications into categories in drag-and-drop exercises.

In this interactive object, learners study animal estrous cycle lengths. They then test their knowledge in three exercises.

In this interactive object, learners complete dental formulas for various species of animals.

In this interactive object, learners sort veterinary cardiovascular system drugs into categories.

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

In this interactive object, learners sort veterinary anti-inflammatory and pain reducing medications into categories. They also complete an exercise involving trade names.

Learners examine the types and sources of credit that are available for operators of a farm or other agricultural business.

Be the force to create a safer agricultural community by creating and presenting effective educational presentations. By informing others about biosecurity strategies, you’ll become a biosecurity advocate as you spread the word about its importance!

Be the force to create a safer agricultural community by creating and presenting effective educational presentations. By informing others about biosecurity strategies, you’ll become a biosecurity advocate as you spread the word about its importance!

Learners consider whether to lease or purchase equipment based on return on investment. This activity is geared toward operators of a dairy farm. Two pages contain audio.

In this scenario, learners measure a roof to determine the number of shingles needed to cover it.