This learning object describes the equipment and supplies needed to document bloodstain patterns.

In this learning activity you'll review the facts and interpretations, determine a verdict, and respond to questions.

I would like to have a human skeleton where specific bones of the skeleton can be dragged and dropped back into the skeleton as a quiz.

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.

Learners observe how a blood drop in flight continually accelerates and increases in velocity over time. As the drop falls, resistance accumulates. The increase in stain diameter relative to distance of a typical 50 ml drop of blood is represented here. This activity has audio content.

in this screencast, learners examine the formation of radial and concentric fractures as an object breaks a pane of glass.

Non-technical terms commonly used in discussions about crime

Non-technical terms often used in discussions of crime

Learners play a game of Tic-Tac-Toe to test their knowledge of normal red blood cells, platelets, and abnormal red blood cell morphology.