Specifications include, but are not limited to: 2.1.2 Materials must incorporate evidence-based approaches, strategies, and resources so all learners can access the content. 2.1.3 Materials must incorporate multicultural education at all grades, including a balanced portrayal of demographics and characteristics represented throughout the District. 2.1.4 Materials should support a digital blended learning model, which includes instructional design where teacher-led instruction is enhanced with online learning. 2.1.5 Digital and online resources should be accessible to all learners, including closed captioning and audio support. 2.1.6 Materials should include structured units to serve as guides for teachers, as well as flexible options that empower teachers to customize instruction. 2.1.7 Materials should be designed to foster collaborative conversations among students and between students and teachers, emphasizing communication and literacy skills that support students in reading on-grade level. The design should provide guidance and resources for teachers to develop their expertise in facilitating these conversations effectively. 2.1.8 The cost of the Materials, as indicated in the Firm’s proposal, shall remain fixed for the duration of the initial Contract Term (either 3 years or 5 years, as selected by the District). After the initial Term, pricing for any annual extensions, up to a maximum total Contract length of seven (7) years, must remain consistent with the rates specified in the proposal or follow a clearly defined rate schedule provided in the Contract.