In this learning object the student will learn how to measure a stain and calculate angles of impact. Determining the angle of impact for bloodstains takes advantage of the trigonometric functions (Sine function).

A mathematical relationship exists between the width and length of an elliptical bloodstain which allows for the calculation of the angle of the impact for the original spherical drop of blood.

Given well formed stains we can accurately measure the width and length by simply dividing the stain along it’s major and minor axis. The opposite halves would be generally equal to each other which aids in establishing the impact angle.

In this learning activity you'll practice reading and interpreting a paychecks and paycheck stub.

In this interactive object, learners answer 25 questions regarding part or assembly drawings. The basic areas of blueprint reading are covered.

Learners examine the use of the tolerances displayed in a title block by calculating the minimum and maximum allowable size of a fabricated part. In a brief quiz, students determine whether a part is usable or should be scrapped.

In this learning activity you'll calculate sine bar problems.

Learners use trigonometry to calculate angular input forces involving Class 2 mechanical levers.

Users calculate the tonnage required to punch holes in a specific base metal. The formula to be used is provided along with the tensile strength for various metals. A calculator is required.

Learners work practice problems to calculate the total resistance of a circuit. Feedback is provided.

Learners calculate the total cost of a loan by entering the principal amount, the period of the loan, and the annual percentage rate.

In this animated and interactive object, learners calculate the area and centroid of a semicircle.

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.

Learners read about the role of water, the basic physiology of water balance, and the effects of dehydration particularly on elderly clients. Tips for maintaining proper hydration are presented. In an interactive exercise, students calculate how much fluid a client needs based on his/her age, health, and weight.

In this activity you'll calculate equations using the order of operations. You'll be introduced to what it is and how it works.

Students read how to calculate feed rates for drills in inches per minute (IPM). The IPM formula is given and students work two practice problems.

Learners read how to calculate the full-time equivalent for hours worked by employees. Practice exercises complete the activity.

In this interactive learning activity, learners explore factors that contribute to the aging process. Learners calculate their age based on biological, psychological, and social experiences. Further reflection allows the learner to consider options and assess issues that impact the aging process.

In this learning activity you'll calculate the numeric value of an area when given the z scores.

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

In this interactive object, students read how to calculate the blank size for cylinders in a three-roll pinch roller. A calculator is required for the brief quiz that completes the activity.

In this animated and interactive object, learners calculate the area and centroid of a triangle.