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 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 practice reading and interpreting a paychecks and paycheck stub.

In this learning activity you'll calculate the total inductance of a series circuit.

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 interactive object, learners change the amount of money received from tax revenue and the amount spent on federal programs as they calculate how fiscal policy affects the gross domestic product (GDP), unemployment, inflation, the annual deficit, the national debt, and interest on the national debt.

Describe the inverting op-amp configuration and calculate the circuit gain.

The learner will calculate input and output circuit resistance for the Inverting Op-Amp configuration.

In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.

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.

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

Learners apply lever ratios to calculate the mechanical advantage in basic mechanisms.

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 interactive object, learners calculate the amount of heat evolved or absorbed in chemical reactions. Four practice problems are provided.

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

In this learning activity you'll identify and calculate the multiplication of monomials.

In this learning activity you'll calculate exponents. You'll practice breaking down exponents and calculating the results.

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.

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