In this lab activity students will learn about the history of fingerprinting as a tool for identification. They then will analyze fingerprints for common characteristics and create a classification system using those characteristics. Once they have created a system, they will analyze class data using the system that is used worldwide for classification. This kit includes an optional activity where students can practice lifting a fingerprint and comparing it to a “crime scene” print. Kit contains enough materials for 15 groups. Teacher’s Guide and Student Study Guide copymasters are included
Show how the first synthetic rubber was made in United States by a reaction of sodium polysulfide with ethylene chloride. This produces a simple condensation polymer consisting of repeating units of ethane and polysulfide.
Urinalysis, one of the oldest medical diagnostic tests performed, is to this day still one of the most common. In this activity, students will use simulated urine to avoid the unpleasantness of using the real thing while still performing actual tests used on real urine samples. Students will examine the simulated urine for factors such as pH, color, clarity, as well as test for the presence or absence of proteins, glucose, and calcium. The students will then examine the samples microscopically to determine if crystals may be present in any of the samples. Kit contains enough materials for 15 groups of students. Teacher’s Manual and Student Study Guide copymasters are included. Needed but not supplied are a hot water bath, glass test tubes, and compound microscopes.
