Pre-owned Math-U-See kit includes: *Integer Block Kit (read below) *Algebra/Decimal Insert Kit (Complete) *Fraction Overlay Kit (Complete) The Integer Block Kit is missing one of the “1 blocks” so there are 19 of 20 included. Also missing the instructions, double-sided Decimal street and Block Clock Poster. You can probably find these documents in the Internet for free or can order replacements online from resellers.
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