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PROBLEM BASED LEARNING LESSON: How pure is hand sanitizer? Grade Level: Elementary Subject: Science Duration: 3 weeks The focus of this lesson will be to use critical thinking and problem solving strategies to improve real world problems in science. The students will use research methods & higher order thinking skills to complete problem solving activities that include NETS-S and National Science Education Standards. The students will be working independently and in collaborative groups to help assist students throughout the duration of the activities. NETS-S Standards- 1. Creativity and Innovation, 3. Research and Information Fluency, and 4. Critical Thinking, Problem Solving, and Decision Making National Science Education Standards- Life Science- a.) Characteristics of organisms and b.) Organisms and the environment Science in Personal and Social Perspectives- a.) Personal Health   Pre-requisite Skills: This lesson is geared towards elementary students. Students should know the scientific method, basic computer skills to complete research, and different publication programs (wikis, power point presentation, etc.).

Objective: Have you noticed the slogan on hand sanitizer bottles, kills 99.9% germs? With a dime size drop, all germs are killed instantly leaving only 00.1%. Have you wondered how clean hand sanitizer is compared to warm water and soap? An investigation is in need. The students will complete research to determine actual facts on which method is the safest. By the end of this unit, the learner will be able to: · Determine safe methods of hand washing · Work in collaborative groups · Use higher order thinking skills to complete the scientific method ·   Develop conclusion s    ·   Use technology to present findings