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CK-12 Interactive Geometry

This is a complete, full-year Geometry course with interactivity included in every lesson. Some lessons include videos, and all include interactives (PLIX and Sims). Adaptive Practice questions help you be sure you understand the material before moving on to build on it. Every lesson has specifically chosen 'Related Modalities' that teach the same concept in different ways. Related Modalities may be additional videos, or interactives, or study guides (often written by students themselves). You can choose to use the resources that are directly included in the Interactive Geometry FlexBook 2.0, or you can customize your lessons by using the Related Modalities that are most effective for you. We take "Learn it Your Way" seriously!



Grade Level(s)




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Materials are Open and Free Yes
Materials are Temporarily Free or Require Licensing Yes
Alignment to Texas Essential Knowledge and Skills
Evident Accuracy and Quality Yes
High Production Quality Yes
Authentic Learning Yes
Materials are Student Ready Yes
Designed from the Learning Science
User Account Required
Dual Language Supported Yes
Relevance Yes
Accessibility Yes
Culturally Responsive Yes
Ease of Adaptation Yes
Learning Management System Support - Learning Tools Interoperability Yes
Learning Management System Support - Common Cartridge
Learning Management System Support - Google Classroom Yes

Submit Your Feedback and Recommendations

These resources have been vetted by the project’s partner organizations using the rubric of qualifications and reviewed by our steering committee. TxLx is not recommending or endorsing any tools, but has made this Open Educational Resources library available to support education leaders in best serving all students. While this list highlights a diverse set of content, we know there are more resources available and would love to hear what resources you’re using.

Email with your suggestions!

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