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Center for Hands-On Learning in Rio Rancho, New Mexico was founded by a group of local elementary school teachers for the purpose of providing an economical and convenient source of science kits and teaching materials to local schools. We incorporated in 1994 as a non-profit corporation, and today our classroom kits and Common Core reference materials are in use all over the country. Thanks for visiting Standards-Toolbox.org, and we cordially invite you to visit our main website; there's a tab on the menu bar for your convenience.