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    • Textbooks
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    • School Ordering Information
    • P.O. Request
    • Pay invoice
  • Books
    • Kindergarten
    • Grade 1
    • Grade 2
      • About
      • Books
      • Program Components
    • Spots for Math's library on Google Books
    • Common Core Alignment
  • About Us
    • About Us
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    • Newsletters
    • Contact
  • Dot Cards
    • Why Dot Cards?
    • Dot Cards
    • Addition & Subtraction
    • Dot Cards vs. Other Ten Frames
    • FAQ
  • Innovative Tools
    • Open Number Line
    • Puzzle-Piece Model
    • Progressive Practice System
    • Predictable and Unique Program Progression
  • Resources
    • Kindergarten Downloads
    • Grade 1 Downloads
    • Grade 2 Downloads
    • Training
    • Live Webinars
    • Professional Development Events
Picture

Mathematical Educational Set - U.S. Patent Information

Dot Cards shown on this website are a Mathematical Educational Set protected with United States Patent Number: D621,878 S. To view our Patent on the United States Patent and Trademark Office website click here.
Additionally, Dot Cards shown on this website are a Educational Set of Cards for Addition and Subtraction protected with United States Patent Number: D757,175 S. To view our Patent on the United States Patent and Trademark Office website click here.

Patent D621878
File Size: 633 kb
File Type: pdf
Download File

Patent D757175.pdf
File Size: 4924 kb
File Type: pdf
Download File



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