We’re aware of an issue affecting customers who purchased their Integer Block Kits after March 2025 that may cause an incompatibility with pieces from the Algebra/Decimal Insert Kits. We understand this can be frustrating to those affected, and we apologize for any inconvenience this has caused.

Please be assured that this issue does not affect the educational effectiveness of the materials. Our curriculum has been designed to be effective even if the pieces cannot be snapped together; simply lay the pieces next to each other on the table.

Additional Options

• Option 1: $15 Coupon — You can receive a $15 coupon code to use on a future purchase at Demme Learning.

OR

• Option 2: Replacement 10s — You can request a free set of 20 replacement 10 blocks that will fit properly with the Algebra/Decimal Insert Kits.

To receive either option, please complete this form:

If you have any questions or need further assistance, please feel free to reach out to us at customerservice@demmelearning.com or 888-854-6284. We are here to help.