Check the listing for details. 1979 Math Sponges Fun Math Games/Problems Unused Vintage Teaching. Condition: Used, Made in United States. Listed at 24.99 USD. 1979 Math Sponges Fun Math Games/Problems Unused Vintage Teaching All pages(perforated)are accounted for. Writing on cover is old price. Not from use. Awesome for road trips and home tutoring. Substitutes...add this to your survival kit. Tons of great math fun. Lots of staining on back cover. In decent condition with typical signs of wear and age which may or may not include staining, small tears, ruffled edges, writing of names on inside covers, etc...inspect pics closely and ask any questions before buying. Please allow some room for difference of hue, lustre and tone from picture. Tons more toys, collectibles, paper, antique, vintage ephemera, maps, engravings, prints, vinyl, vhs, media, books, bags, handmade and more! Will combine shipping! DWG1