ABSTRACT
SECTION IV gives some considerations about using Geometric Algebra already at school and about Space-Time Algebra in honor of the work of David Hestenes and especially to the 50th anniversary of his book about this algebra. The professional life of David Hestenes is very much the professional life of an educator. He has held the Chair of Physics Education at Arizona State University. Thus he invented, improved and implemented Geometric Algebra first as a tool in physics education [18], [19] and undoubtedly in mathematics education [21]. Thus David Hestenes’ lines of thought always started with didactical questions and only then reached the field of Geometric Algebra as a proper improvement of our present-day mathematical views and a proper answer to our present-day mathematical problems.
