Right now there are 6 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Office Products › Office & School Supplies › Education & Crafts › Math Materials. These are inspected returns and open-box items that Amazon sells and ships itself. WarehouseHunter puts each one next to its current new price, so you can see what you save at a glance.

Brands with the most offers here: hand2mind, Fuzion, Learning Resources. Every item is a one-off, so the stock moves all day and new deals keep arriving.