My app, pre-Calculus Trigonometry Tutor, available on Itunes for free teaches pre-Calculus trigonometric concepts to users through a space-based visual spatial algorithm. I designed and implemented this algorithm myself for users to learn trigonometry through visual spatial diagrams and to retain the information they learn through space-based repetition. Compared to other ways of learning trigonometry found in textbooks and other apps, this app has been proved the most efficient and effective way of learning trigonometry. Why trigonometry? Trigonometry is the last math class that is required to graduate high school and is considered one of the hardest subjects in high school. It appears to be a visual spatial subject by nature; however, every single pre-calculus trigonometry book teaches it through a rule-based approach, of simply memorizing rules, instead of truly explaining the concepts through visual models. This app is the new most effective and efficient way to learn trigonometric concepts found in high-school pre-calculus and encourages high school student’s participation in STEM education fields. How does it do that? Well it is a well known fact that United States remains behind other nations in math and science education. So we need to find ways to enhance the training of high-school students in math and science, so they can contribute to maintaining the strength of the US in highly STEM-dependent technology fields in industry, government, research and education. My app explores the role of visual spatial representations that ground the mathematical concepts covered in pre-calculus trigonometry and demonstrates the ability to enhance reliance on such representations and thereby increase high school students’ success in this difficult subject that sits at the gateway to entry into university-level science, mathematics, and technology coursework and ultimately into careers in STEM disciplines. LINK TO ITUNES APP: https://itunes.apple.com/us/app/pre-calculus-trig-tutor/id830537390?mt=8

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