Outline



How Accurate is Hand Sanitizer? Problem Based Learning Outline

**//Before Presentation of Lesson-//** The students will be placed in groups based on the discretion of the teacher. The groups will create a wiki to display their process throughout the experiment. The wiki must be made public so everyone can view each group’s particular wiki. The URL address will be placed on the class blog site for others to view. A Skype account can also be created for students to communicate outside of school with group members and to have video conferences with experts within that field of study. During this particular time, the students will be assigned lab stations and given all materials- scientific case (microscope, lens, goggles, etc.), white coats, dial soap, Purell hand sanitizer, and journal. The digital cameras will be used from the science department.


 * //Day 1 -3- Whole Class Setting/Discussion//**- The students will complete a lesson on the scientific method. The power point presentation is attached on the tab. The scientific method will serve as the guide for the Problem Based Learning Unit. Each step will have in depth discussion to ensure that the students understand each stage. The students will complete an activity on the scientific method. A graphic organizer activity sheet is attached for the students to list the process of the scientific method with explanations of each step. The students will complete a scientific method experiment based on the given prompts. The worksheet is attached under Lesson A.

**//Day 4 Individual-//** The students will research pathogens/typical germs and their effects on the human body, as well as prevention techniques. The students will place their notes in their journal. The students will watch a video from []. The login information and password are shelbyc. The students will complete the lesson quiz and email results to the teacher ( nikisha.greer@waldenu.edu ).


 * //Day 5 Whole Class Discussion-//** The students will complete a discovery activity called Glitter Germs. This activity serves as a visual representation of germs on the body. Students must try different strategies to remove the germs (towels, paper towels, cold water, clothing, etc.). Upon removing the glitter/germs (with warm, soapy water), the class will discuss the activity (Whys and Why nots). The class will watch a video on germ prevention- [] . The students will be given the problem- Does hand sanitizer actually kill 99.9% germs? Is it healthier to use warm, soap and water?


 * //Day 6-10 Collaborative Groups//**- Students will use the scientific method to investigate the problem. The attached link provides an in depth explanation of the scientific method ( [] ). The students will move through each step, by forming a hypothesis, providing explanations and data of their findings. If the hypothesis does not present accurate data, the students will form a new hypothesis and work through the steps once again. Pictures will be taken by a group member to represent each step of the scientific method. Each day the students will write in their journal about any challenges or discoveries within their research. This information will be uploaded on the group’s wiki. The teacher will serve as the facilitator (direct instruction and scaffolding).


 * //Day 11-15- Presentation of Evidence//**- The students will present their evidence/findings by creating either a power-point presentation or video on whether hand sanitizers actually kills 99.9% germs.

** Day lengths are subject to change depending on the students’ mastery of skills during Days 1-5 and difficulty level during Days 6-10. **