Inquiry (采购产品): Math manipulatives I am a 30 yr. veteran primary teacher and have developed math manipulative materials that teach the addition and subtraction facts from 1-10 and on up to 100 and beyond. They also teach the relationship of addition and subtraction. There are no pieces to get lost. These units have been successfully tested in the classroom and are appropriate for pre-school, "K", primary classes, as well as for home-schoolers and parents. My manipulatives have been patented and there are no products on the market like them. If you would care to have a sample, proof of patent, and description of how they are to be used, I would be glad to send this information along to you. Sincerely, Martha Thorpe Marthasthorpe@aol.com **** Hidden Message ***** Martha Thorpe 25248 Pleasant Trail Richmond Hts.,, OH 44143 USA Company: -------- Title: Teacher Phone: 216-481-5520 E-mail: marthasthorpe@aol.com **** Hidden Message ***** marthasthorpe@aol.com