See Mondays lesson outline

See last written outline-

same lesson outline all week- Sam has not been in attendance to science class

Today we had the talent show. Vlad did an exceptional job!

The lesson outlined for Monday will be used today. Sam was late on Monday and missed classes

He completed his homework from this weekend independently (finding equivalent resistance, total current, current in each resistor, potential difference across each resistor for series and parallel circuits. Then, we started to look at circuits with resistors connected in series and in parallel.

Using a series of printouts and short videos, we dove into the history of the use and pitfalls of cosmetic use through the ages. The use of crushed gemstones was examined regarding their use as lip color, in both sexes. The use of Ceruse, type of white lead during the renaissance was discussed as to its toxic affects by lead poisoning. Queen Elizabeth the first was used as an example of overuse of white lead, leading to major skin disease and the need to use more to cover the abnormality, probably leading to her death. Ancient Egyptians extracted red dye from the Fucus-Algin to be used on the face and lips. Unfortunately, the dye contained iodine and bromide salts which were absorbed into the dermal blood vessels and produced toxicity. Other early cosmetic developments were noted (some still in use) such as kohl, castor oil, rose water and lanolin. We will examine over the next few weeks the chemistry and toxicology of some of the major chemicals, both natural and synthetic, found in the classes of cosmetics.

Lesson outline is written on Thursday's summary. Sam needed to leave school before the class, so this is Thursday's lesson.

Sam had to outline,other than makeup, what constitutes cosmetics. The list included skin cleansers, body lotions, shampoo,perfume and hair gels. We are going to take up each one as regards chemical ingredients, type of solution, absorption and penetration and toxic effects. This lesson discussed the regulation by the FDA and their definition. We also will discuss the etymology and history of cosmetic use, going back 3000 years.

Having finished the anatomy and physiology of the skin, we are beginning a study of what would follow naturally, cosmetics. A series of questions led Sam to a working definition of cosmetics: A substance used to enhance or alter the appearance. Samantha outlined areas where this enhancement or alteration would most likely be used, such as the face, hair and lips. Chemical compounds or mixtures of compounds, all of which we have studied previously... Their derivation, either from natural sources or synthesis was discussed, including the fact that synthetic or artificial does not mean toxic or bad. The breakdown of the term cosmetics into their common categories was started.