Book Nine: Beyond Basic Geometry

Students need to see the movements involved in geometric transformations—one step at a time. With a visual example for every single point in the process, You Teach You, Book Nine ensures that the motions are never blurred. Through 50 self-explanatory "See it, Do it, Check it" lessons, students learn to determine geometric features and changes precisely, not “probably.”

Whether it’s moving shapes around a grid, predicting reflections and rotations, or identifying the slant height of a pyramid, every single concept is demonstrated by example and verified through direct discovery. And with detailed feedback always within reach, the forward movement never stops. All it takes to get moving is a pencil and paper.

Perfect For:

Students for whom geometry has moved too fast: Anyone who has struggled with abstract geometry and needs to slow the subject down in order to get up to speed.

Homeschooling Parents: Lessons that are ready to go right out of the box, allowing children to discover the geometry of measurement and motion in their own time, and without parent intervention.

Visual Learners: Students who need to watch how a shape changes or see where a formula comes from before committing it to memory.

Classroom Teachers: A reliably reliable tool that allows each and every student to master the complex geometry of motion and measurement by moving through it at their own individual pace.

Future Builders and Designers: Anyone who wants a solid foundation in 2D and 3D shapes, scaling, and measurement through direct, hands-on practice.

We don't build students who can follow rules; we build thinkers who understand why the rules exist.