1. Activity:Elephant Toothpaste Keep 32 What is it? By Alec,Rachel,Graciella,Armand Lesson Overview and Reflection Product: Keep 32 Essential Question: What is Keep 32? Story Narrative: Comic Assessment Used: Written Test Reflection: To better understand our groups main topic, toothpaste our group looked up articles that were fairly recent in the news. Some articles we used in the beginning of our toothpaste research were almost ten years out of date. So we wanted to have something that was more recent. The group used our teachers custom search engine to find articles. We had four people in group, so we printed out four articles. They were all interesting in their own way but the article that had the most appeal was about the molecule Keep 32. We all became equipped with the knowledge of Keep 32 and made a lesson for the class. We decided to make a comic to better show the information. We scanned the paper then presented. Keep 32 is a molecule that goes onto your teeth and kills the bacteria inside. The bacteria being called Streptococcus Mutans, it feeds off sugar in your mouth and creates acid that melts your teeth and causes cavities. Keep 32 can stop this bacteria from terrorizing your mouth for weeks on end. However it is an antibiotic so some fear that the bacteria will become resistant to Keep 32. REFERENCES Science, Bob. "The Elephant's Toothpaste Experiment - Science Bob." The Elephant's Toothpaste Experiment - Science Bob. Science Bob, n.d. Web. 15 Mar. 2013. This activity is intended for anyone in High School through Adulthood. During this activity, students should wear goggles and an apron. By mixing just a few combinations of household ingredients you can have a volcanic reaction that emulates what happens when you brush your teeth. Materials 1 Graduated Cylinder ½ Cup of 20-Volume Hydrogen Peroxide (6%) 1 Tablespoon of Dry Yeast 3 Tablespoons of warm water What to do or Description of Demonstration Pour ½ cup of Hydrogen Peroxide in Cylinder Add 8 drops of favorite food coloring Add about 1 tablespoon of liquid dish soap Mix Separate cup mix warm water with yeast mix about 30 seconds Pour yeast in cylinder, see reaction Our 3 big ideas Sodium lauryl sulfate is according to Ullmann’s Encyclopedia of Industrial Chemistry. Sodium lauryl sulfate ether sulfate or simply known a (SLES) is cheap foaming agent that is very effective at doing its job. Surface tension is when the hydrogen molecules pull together and cause tension, like a thin elastic film. What is used to break up surface tension? – Surfactants are used to, in small amounts break up the Surface tension of water. and how this activity demonstrates them. One of the main ingredients in the demo is dish soap or how chemists know it, Sodium lauryl sulfate (SLS). SLS is one of the main reasons that it foams in the demo. This is also apparent in toothpaste when you brush your teeth. Surface tension is in the name the surface is close together. When it comes to toothpaste surface tension can be a bad thing. It can cause the toothpaste to get less plaque and bacteria off than if it was foamy and able to get into hard to reach places. Surfactants is what make the foam possible, they are used in small amounts to break up surface tension. SLS, is what makes the foam. Liquid Dish Soap Food coloring Small cup Safety goggles Alec, Rachel, Graciella, Armand currently attend High Tech High International and are in the 10 th and 12 th grade. The New Discovery That Cavity- proofs Your Teeth - The Week." The Week. TheWeekStaff, 11 July 2012. Web. 12 Apr. 2013.