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.

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.

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 the first section of this activity, learners listen to an introduction explaining the importance of setting goals in all aspects of life. The remaining pages list examples of goals and procedures relating to a farming operation.

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.

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

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

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

Learners read an extensive explanation of the types of budgets most frequently used by farm operators, whole farm, partial, and enterprise, and complete a brief quiz to test their knowledge. Farm financial standards and ratio calculations are provided. Exercises complete the activity.

Learners read and listen to tips for organizing farm-related financial information.

Learners practice identifying land sections using land survey terms and maps. Feedback is provided at the end of the activity.

Learners examine 10 steps to consider when passing on farm assets including financial security, partnerships, taxes, lease agreements, gifting, and treatment of heirs.

Interactive excercise to age deer by dental inspection.

In this screencast of an old Flash learning object, learners follow along as we sort parasites into divisions and helminth divisions. We'll also identify affected body systems.