Yes, to become a teacher's aide, it is required that you have a degree of at least two years' teaching education. You can find more information at http://degreedirectory.org/articles/Teachers_Aide_Associates_Degree_Program.html.
Unlike teachers, teacher's aides are not always required to have an undergraduate degree. However, an associate degree in child development will help prepare for teacher's aide positions in daycare centers and organizations that work with children.
In most instances, teachers are required to be certified in first aid and CPR before they can obtain a teaching license. An exception would be if they are physically unable to perform the skills (physical limitations).
teaching aid
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In this link: http://www.scholarships.com/financial-aid/college-scholarships/scholarships-by-major/education-scholarships/ you will find many scholarship available for students studying to become teachers. for example Golden Apple Scholars of Illinois
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what are improvised aids
Teaching aids are tools that classroom teachers use to help their students learn quickly and thoroughly. A teaching aid can be as simple as a chalkboard or as complex as a computer program. Because every individual learns in a different way, teachers rely on these tools to explain concepts to students with a wide variety of learning needs. Teaching aids are crucial for educators as they are key in differentiating instruction for all types of learners.
projected aids
Not necessarily if you read your books. If you read, you can become a life-long learner without the aid of a teacher.
Teaching aids help the teacher convey the lesson to the pupil. Learning aids help the pupil understand the lesson.
caring, teaching about the first aid and helping to aid.