How to take crime scene photos like a professional investigator
Here we break down essential forensic photography techniques and terms you should know about. Investigators and witnesses can describe crime scenes, sometimes in great detail. However, photographs can better tell the story with objectivity. They freeze time and leave a permanent record of the scene. Despite its advantages, photography remains the least understood and least […]
Single-replacement Reaction
Create silver decorations with chemistry In this activity students perform a redox reaction in which silver take the place of copper in copper wire. The copper changes from its elemental form to its aqueous ionic form. During the course of the reaction, the silver ions are reduced and are removed from the solution. The silver […]
What Are Phenomena?
Natural phenomena are a context for the work in which scientists and engineers engage. In nature, phenomena are considered observable events that we can use science to explain or predict. A beautiful red sunset, moss growing on a bare rock, a meteor shower, the fizzing of baking soda and vinegar, a sick child running a […]
3-D Imaging: The Mystery Unlocked
Seeing the Solar System in a New Dimension Moviegoers are demanding more from their sensory experience, and 3-D viewing has become popular for many blockbuster movies. Unlocking the mystery of 3-D imaging not only spurs discussion about the greatest 3-D movies, but it also provides opportunity to discuss visual perception, optics, and colors with your […]
Make Your Own Indicators
Testing the pH of a solution is a fundamental skill in chemistry. Students typically test pH using a pH meter, litmus or pH paper strips, or one of a variety of commercial acid-base indicator solutions. Acid-base indicators are weak organic acids that change color depending on the pH of a solution. A wide variety of […]
Chicken Wing Musculature
Explore the structures and functions of muscle tissue Essential Question What are the structures and functions of muscle tissue? Activity Objectives Observe muscle tissue. Explain movement based on muscle attachment. Practice dissection techniques. Background There are 3 different types of muscle tissue. Smooth muscle can be found in organs in the digestive system, reproductive system, […]
Bacteriophages in Human Disease
Friends and Foes Bacteriophages are viruses that infect bacteria. They are a major agent of horizontal gene transfer between bacteria–a concept covered in AP® Biology and other biology classes. What students may not be aware of is the role bacteriophages play in human disease. Bacteriophages play a critical role in some human diseases You would […]
Preserved Specimens: Safety, Storage, and Disposal
Carolina offers several options that provide your students with an engaging and safe dissection experience. SDS for Specimens Specimens in Carolina’s Perfect Solution® Specimens in Carosafe® SDS for Fluids Carolina’s Perfect Solution Carolina’s Wetting Solution Carosafe® Concentrate Carosafe® Solution Latex Carolina’s Perfect Solution® is a combination tissue fixative and preservative that we formulated here at […]
The Effects of Cell Cycle Deviation on Cancer Development
While multiple forms of cancer exist, ultimately all cancers involve a loss of control of the cell cycle and dramatic changes in the rate of cell division. Cancer is a genetic disease, but primarily an acquired one. Most mutations arise from DNA errors introduced during replication that subsequently go undetected and avoid repair. DNA damage […]
Finding Funding
Successful grant writing Have you watched your science budget shrink over the past few years? Has the thought of holding a bake sale crossed your mind as a way of funding your lab? Despite the shrinking budgets of many of our schools, there are funds available for science education; you just need to know where […]