Qualified Offerors are encouraged to submit a proposal for Middle School Mathematics and supporting materials that are included with the textbook at no additional cost. Textbooks and materials must support the Virginia Standards of Learning. 3.2 Offerors shall offer a variety of materials in both digital and print solutions limited to the following: 1.Workbook or lab book and corresponding textbook; 2.Teacher Edition for all items; 3.Online resources such as manuals, workbooks, and teacher materials; 4.Teacher resources for middle school mathematics 3.3 Offerors shall provide customer support and professional learning for Stafford Schools teachers and staff using contracted materials and related materials or services.