Teaching Math: Grades K-2: Reasoning and Proof

Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

About Us
Video Series
Professional
Development
Course &
Video Licensing
Lesson Plans
- View All
- Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Foreign Language
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Literature & Language Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Mathematics
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Science
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
- Social Studies & History
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - Discipline Page
  - ALL
Interactives
- View All
  - Student
  - Teacher/Adult
- Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Foreign Language
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Literature & Language Arts
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Mathematics
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Science
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
- Social Studies & History
  - Grade K-2
  - Grade 3-5
  - Grade 6-8
  - Grade 9-12
  - College/Adult
  - ALL
News & Blog
- Learner Log Blog
- New Releases
- Monthly Updates
  - Signup
- @Social
  - Facebook
  - Twitter
  - Pinterest
  - YouTube
  - Google+


	Introduction \| Difference Trains \| Problem Reflection \| Your Journal




		Teaching Math Home \| Grades K-2 \| Reasoning and Proof \| Site Map \| © \|


	Exploring Reasoning and Proof