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The Saylor Foundation K-12 Geometry Course

The Saylor Foundation/ Kate Cottrell

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Note that this resource was reviewed during the Spring 2014 review period. The resource may or may not have been updated since the review. Check with the content creator to see if there is a more recent version available.


This resource was reviewed by OSPI in Spring 2014. Learn more about the review process and the data analysis approach.

Background from OER Project Review Team
Saylor is a non-profit foundation that hires teachers and professors to create course blueprints, locate, vet, and organize OER into a structured course format. This Geometry resource was designed and is intended as a self-directed online course or to be used by teachers as a supplement. It is also useful for the homeschool community and alternative classroom programs. This should factor into the viewer’s analysis of the review results.

IMET (Learn more)

Chart with scale from 0 (Strongly Disagree) to 3 (Strongly Agree). Consistent Content: 2, Rigor & Balance: 1, Practice Connections: 1, Standards for Math Content: 1, Quality Indicators: 1.

EQuIP (Learn more)

Revision needed (5.0)
Chart with scale of 'meets criteria' from 0 (None) to 3 (All). Alignment: 1.5, Key Area of Focus: 1.5, Instructional Supports: 1.0, Assessment: 1.0.
Unit 1: Congruence, Proof, and Constructions

Achieve OER (Learn more)

Chart with scale from 0 (Weak) to 3 (Superior). Explanation: 1.75, Interactivity: 1.5, Exercises: 2.0, Deeper Learning: 1.25.
Unit 1: Congruence, Proof, and Constructions

See standard error chart for the review scoring

Reviewer Comments (Learn more)

Moderate (2.5)

Comments/Ideal Use:

The ideal use of this resource as it stands now is for student use. This resource has the student doing the units individually. The teacher could be a guide to assist a student with clarification on the lesson or the standard. This resource at this time is not effective for teacher use. It was observed that many of the third-party sites would be effective tools for teachers already with an established curriculum.


  • Every lesson has the student go to a third-party site to complete the explanations and answer the questions associated with that standard. The student also is able to use those sites to have an extension of the understanding of the standards

Comments/Ideal Use:

A veteran teacher could use bits and pieces for supplemental problems. The unit on constructions for example has some good internet sites. These items could be used either with a student who had perhaps missed several classes or with a student working independently on credit recovery. I do not recommend this for a class textbook or even a regular source of practice problems or homework assignments.

I would use the one part of this resource. The work with constructions would be most suitable for review or to supplement for a student who might be on home-bound instruction or who had missed the classes on constructions due to illness. Little is added to the readily available Khan Academy or CK-12 geometry lessons. In fact, it would be better to use the current CK-12 geometry lessons instead of the previous edition included here.


  • While there is some application of knowledge and skills, it does not go beyond a good junior high math program. Most of the worksheets and activities seem to be of the "plug into the formula" format
  • Each new site requires the user to learn a new navigation
  • A great deal of procedural skill checks are included without sufficient development of conceptual understanding
  • Teacher materials, manipulatives, suggestions for differentiated instruction, ESL materials, alternate pacing guides for gifted are not present

Comments/Ideal Use:

This resource is ideal for the distance learner. It is written for a student to learn independently.

A teacher is not required for this resource. It takes a while to figure out the format and sequencing of materials. A student must have an appropriate computer to access all the types of formats. There is a good use of interactive exercises and objectives are clearly stated. There needs to be more connections made between the major clusters as it appears to be separate learning units. Answer keys and rubrics should be made available to the learner so they can reflect upon their progress. Need to incorporate the Mathematical Practices throughout.

Comments/Ideal Use:

This resource could be used by an experienced teacher who would closely direct students to the sections of the curriculum that are appropriate in the study of concepts to be learned to meet a learning target.


  • Consistency and sustainability of curriculum. Saylor is built on the foundation of other Web resources
  • Format for accessing materials can be confusing for students -once the student has left the Saylor site, it can be confusing to return

Creative Commons License
This work by the Office of Superintendent of Public Instruction is licensed under a Creative Commons Attribution 4.0 International License.