Math-U-See Geometry
Math-U-See keeps it simple and smart—clear pages, short lessons, and a mastery approach that helps math make sense from the very start! Already have a Demme Learning subscription? Customize math to remove the extra subscription card.
$118
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Please Note: The digital subscription portion of this product is non-returnable according to publisher policy.
2026 Ninth-Grade Curriculum Kit
Geometry explores the relationships between shapes, space, measurement, and logical reasoning. In Math-U-See Geometry, students move beyond arithmetic and algebra to develop a deeper understanding of the mathematical principles that describe the world around them.
This course introduces points, lines, rays, angles, polygons, circles, and three-dimensional solids while helping students develop strong spatial reasoning and problem-solving skills. Students learn to use geometric tools such as compasses and protractors as they construct figures, analyze relationships, and solve increasingly complex geometric problems.
Topics include the Pythagorean Theorem, congruence, similarity, transformations, area, surface area, volume, circles, and conic sections, including ellipses and parabolas. Students also learn to write and evaluate geometric proofs, developing the logical reasoning skills that are central to higher-level mathematics.
Like all Math-U-See levels, Geometry follows a mastery-based approach that introduces concepts incrementally and emphasizes understanding before moving forward. Clear video instructions, visual demonstrations, and hands-on activities help students build confidence while developing a solid understanding of geometric relationships.
Instructional videos and teacher resources are accessed through Math-U-See's Essential Plan. Each subscription includes 2 course credits, supports up to 5 student seats, and provides access to activated levels for one year.
Designed for students who have completed Algebra 1, Math-U-See Geometry provides a strong foundation in spatial reasoning, mathematical proof, and geometric analysis while preparing learners for Algebra 2 and more advanced mathematics.
To find the Math-U-See level that best fits your child you can try the placement test here.
Look inside this book and read through a lesson to see how it might work for your family.
How to Use Math-U-See Geometry
- Begin each lesson by watching the instructional video. You can watch it ahead of time and teach the concept yourself, or view it together with your student. The videos introduce each new concept step by step and demonstrate the Math-U-See approach in action.
- Before teaching, review the online teacher resources included through the Essential Plan. These materials provide teaching notes, practice suggestions, and answers, but most parents find that a quick review is all that's needed before getting started.
- After the lesson, choose the worksheets that best fit your student's level of understanding. Each lesson includes seven worksheets labeled A–G. Start with Worksheet A to introduce the concept, then add additional worksheets as needed for practice and review.
- Many families find that completing Worksheets A, D, and G provides a good balance of instruction, review, and challenge. However, one of Math-U-See's strengths is its flexibility. Students who need more practice can complete additional worksheets, while students who quickly master a concept can move ahead.
- Plan on completing approximately one lesson each week. With 30 lessons in the course, this pace allows ample time for instruction, practice, review, and mastery throughout the school year. If a concept needs more time, don't hesitate to slow down. Math-U-See is designed around mastery, not speed.
- Use manipulatives and visual demonstrations whenever appropriate. These tools help students develop a strong conceptual understanding before moving to more abstract mathematical thinking.
- By moving at your student's pace and focusing on mastery rather than memorization, you'll build the conceptual understanding and problem-solving skills needed for higher-level mathematics.
In the 2026 kits this course earns high school credit:
1 credit of Geometry
Math · 9th grade · Classic and Non-Religious kits
The Essential Learning Set includes 1-Year Essential Plan Subscription Access and a Student Pack.
Purchase this set if you have never taught Math-U-See Geometry before.
Universal Set
The Universal Set includes 1-Year Essential Plan Subscription Access, a Student Pack, and a printed Instructor Manual.
Purchase this set if you have never taught Math-U-See Geometry before, and feel like you would benefit from having a printed Instructor Manual.
Student Pack
The Student Pack includes the Student Workbook and Tests. The Student Pack is suitable for families with a second student.
Please note: Instructor Materials required. Purchase this set if you already own Online or Printed Instructor Materials.
Printed Instructor Manual Only
Printed Instructor Manual Only is a printed copy of the Instructor Manual for those who prefer to have it in print rather than online, or both.
This would typically be for those who purchased the Essential Set and realized they would like to have a printed book as well. If you want a bundle that includes a printed manual, order the Universal Set.
DVD Only
DVD Only is the level DVD with the Lesson Videos.
This is no longer included in any of the Math-U-See bundles. It can only be purchased separately.
1-Year Essential Plan Subscription - Access Card Only
To purchase 12-month online access to instruction videos and online instruction manual as well as other resources, click here.
A note from Demme Learning: If you already have an active Demme Learning subscription, have already purchased a Math-U-See set that includes a subscription card, or have purchased a subscription card individually, please review the following before purchasing.
- The Demme Learning online subscription platform only allows one active subscription per account at a time.
- Subscriptions cannot be stacked, combined, or applied simultaneously to extend duration or unlock additional courses/students.
- If you currently have an active subscription or are purchasing multiple sets/cards, you will not be able to redeem a second code until your current subscription expires.
Publisher's Information
Publisher: Demme Learning
Series: Math-U-See
Age Recommendation: 14+
Grade Recommendation: 9th+
Faith-Based: No
Copyright: 2009
Consumable: No (Instruction Pack), Yes (Student Pack)
Lessons: 30
Geometry Overview:
Geometry Lesson 6 Sample:
Table of Contents
- Points, Lines, Rays and Line Segments
- Planes and Sets
- Angles
- Types of Angles
- Parallel and Perpendicular Lines with Midpoints and Bisectors
- Supplementary and Complementary Angles
- Transversals with Interior and Exterior Angles
- Perimeter of a Rectangle, Triangle, Parallelogram, and Trapezoid
- Area of a Rectangle, Triangle, Parallelogram, and Trapezoid
- Constructing and Identifying Triangles
- Regular Polygons
- Geometry of a Circle, Sphere and Ellipse
- Inscribed and Circumscribed Figures
- Area and Circumference of a Circle
- Area of an Ellipse
- Latitude and Longitude
- Volume of Rectangular Solid and Cylinder
- Volume of Pyramid, Cone, Prism, and Sphere
- Surface Area of Solids
- Radicals
- Pythagorean Theorem
- More on Radicals
- Special Triangles: (45°-45°-90°)
- Special Triangles: (30°-60°-90°)
- Axioms and Postulates
- Corresponding Parts of Triangles and Remote Interior Angles
- Proving Triangles Congruent with SSS and SAS
- Proving Triangles Congruent with ASA and AAS
- Proving Triangles Congruent with HL, LL, HA, and LA
- Proving Triangles Similar with AA and Proportion or Ratio
- Transformational Geometry
- Trigonometric Functions: Sine, Cosine and Tangent
- Inverse Trigonometric Functions: Secant, Cosecant, and Cotangent
- Sin² + Cos² = 1
“My son has had average to above-average grades this entire school year thus far, which is a huge step in the right direction. With his other course, he would often struggle and have to repeat lessons to master a concept. With this course, he has never had a failing mark and is confident when it comes to understanding new concepts.” Read the Review.
Find answers to the most frequently asked questions about this product below:
Math-U-See has transitioned from lifetime access to a one-year subscription for its digital resources, including instructional videos and the online teacher manual.
This new subscription provides digital access for two levels and up to five students. Depending on your family’s needs, this may offer more flexibility than the previous level-by-level lifetime access model.
One of the strengths of this plan is its flexibility. Your students are not locked into a single level. If a student finishes a level early or needs to go back and review an earlier one, you can swap a course credit to a different level right from your dashboard, up to once every 30 days. Because the plan includes two credits, a family with two students in different levels can often cover both with one subscription. When a student is ready to move up, you simply purchase the physical materials for the next level and swap the credit. As long as your subscription is active, there is no new subscription to buy to keep going.
For more information, view our 1-Year Essential Plan Subscription Access page.
Math-U-See is a skills-based program that focuses on student mastery of a concept before progressing to the next concept. Because of this, it is not aligned with the common core and, therefore, may not meet the requirements of state standardized tests.
In other words, Math-U-See covers topics in a logical sequence, which may not exactly correlate with the more scattered assortment of skills that are typical for each grade. Parents who wish to compare the Common Core State Standards for kindergarten through sixth grade with the content taught in Math-U-See can do so here.
Typically counted as 1 high school credit.
Your subscription includes a PDF of the Instruction Manual, so every page from the physical book is there in digital form. Pick a lesson and you'll find the menu just below the lesson video: Lesson Instruction (the PDF of the lesson pages), Solutions (the PDF solutions to the Student Workbook), and other Resources. The virtual manipulatives are in the Digital Toolbox.
If you chose the Printed Instructor's Manual instead, those same pages are in your book.
- May 21, 2026
Steph H.
We've been enjoying Math-U-See. My son is currently doing geometry. The videos and instructions are clear and easy to follow (which is a good thing because it's been a while since I've taken geometry!). The practice pages are thorough and incorporate review questions from past lessons.
- June 26, 2024
Love Math-U-See
Heather J.
We love Math-U-See. This math is explain easily for my child to understand. Lots of practice work and I love that it has reviews for previous lessons.
- February 3, 2023
Love this
anne s.
Math u See is excellent. We’ve been using it since primer. It’s great because the higher the math gets, I get to learn it too!
- July 22, 2021
Highly recommended
malynda w.
Thanks to the combination of video and text lessons my 17yo is able to truly understand the lessons. There are multiple worksheets for each lesson which incorporate concepts from previous lessons as well. We are loving this - math is no longer a dreaded subject in our house!
- April 2, 2021
Kristi D.
My son is able to do math without my help thanks to this program. It also is great to have a visual lesson.
- November 16, 2020
Geometry
Sasha R.
This has been the best Math curriculum for my 15 years young son. He’s doing so much better with less stress.
- September 23, 2020
Math-U-See transformed math for this family
Kathleen W.
We’ve been homeschooling our 9 kids for 30 years now and although we tried all the “best” math programs first, Singapore, Saxon etc..., I can not imagine any other program for our homeschool. When we started homeschool I thought math would be the subject that took our children into the school system but Math-U-See made math so clear and enjoyable it is the favorite subject of all 9 of my kids. I am now homeschooling a child with severe special needs and developmental delays and he is thrilled to have his own primer book, “just like the big kids”.
- March 20, 2020
The best math curriculum we've found
September L.
Our family has been homeschooling a wide range of children for the past 18 years, and Math-U-See is our tried and true go-to for Math instruction. What sets MUS apart is Steve Demme's visual explanations for why we use certain formulas or perform specific mathematic operations. Knowing the why is the key to actually mastering math, not simply memorizing formulas. MUS will help your child truly learn and retain the knowledge they need to acquire in order to apply math to their daily lives.
- January 17, 2020
We love Math u See!
Bianca M.
We started math with a different program, and my visual learners just didn’t get it. My HS freshman has been using MUS since Gamma, and she flew threw Algebra 1 and is halfway through Geometry. She loves it, it’s “easy”, and she grasps the concepts. The other day she was able to finish a complex word problem using shortcuts that I never would have considered-she’s able to do that because she has a deep understanding of what she’s doing and why. The only downside of this curriculum is the price. But it’s worth it!
- August 12, 2019
Math-U-See Geometry
Monica B.
This is our second year using Math You See and we are loving it. Great curriculum that builds on skills and teaches the mastery approach. I love the online support and the DVD lessons that comes with it.
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