I HAVE co-authored two books for NCTM

Developing Essential Understanding for Proof and Proving in Grades 9-12. Purchase your copy here.

Developing Essential Understanding for Proof and Proving in Grades 9-12. Purchase your copy here.

Connecting the NCTM Process Standards and the CCSSM Practices. Purchase your copy here.

Connecting the NCTM Process Standards and the CCSSM Practices. Purchase your copy here.