Oriented toward the classroom or home-school setting, the blackline master book is your guide to introducing the Lenart Sphere in a classroom.
Over 40 activity masters introduce objectives, describe construction steps, guide student investigations,
and offer suggestions for additional exploration.
The activities review a traditional topic from plane geometry, then give the students directions to experiment with the same topic on the sphere.
Students are challenged to shift their thinking from the plane to the sphere and to compare two different worlds of geometry.
This book can serve as the text for a course in spherical geometry, or you can select individual investigations from the book to use in conjunction with any plane geometry text. Most activities deal with basic concepts of spherical geometrysuch as points, lines, circles, distance, angles, and area. Later investigations explore tessellations on the sphere and inscribed Platonic solids. Teacher's notes provide advice and support for these activities.
Applications are included in which students create their own maps on a globe and construct the earth's coordinate system. Students also follow routes taken by explorers and demonstrate the collision of the continental plates.
No previous knowledge of spherical geometry is required. Activities are designed to be accessible to any teacher with a knowledge of traditional Euclidean plane geometry. You don't need any previous experience with spherical geometry to use this book.