Primary Education
- Detracking, How ToHenri's Math Education Blog
- More on the California FrameworkHenri's Math Education Blog
- Geometric Puzzles UnitHenri's Math Education Blog
- Math Stations and ExpectationsEducational Aspirations
- Four fours!1001 Math Problems
- The Game of PentHenri's Math Education Blog
- Integrating the High School Math CurriculumHenri's Math Education Blog
- Bewijzen van gelijkhedenWiskundeleraar