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.

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

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

In this interactive learning object, students calculate a resultant of multiple forces acting in a concurrent, coplanar condition.

Learners review surface finish basics and read how to calculate the roughness average.

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

This video will walk through how to calculate speeds and feeds for drilling parts on a milling machine.

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.

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

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

In this interactive object, learners use the Law of Cosines to calculate forces.

In this interactive object, students calculate inductive reactance, impedance, current, and power in parallel RL circuits.

The learner will calculate basic circuit resistance.

In this interactive object, learners calculate a centroid of a composite area by first creating a chart. A short quiz completes the activity.

In this learning activity you'll calculate the determinant of a 2x2 matrix.

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

In this learning activity you'll calculate the answers to long division problems.

In this interactive object, students calculate capacitive reactance, impedance, current, and power in parallel RC circuits.