Yes, both writing assignments should be taken from your teaching within this three-to-four week period of time.
No, the two assignments do not have to be directly related to each other; however, they do need to be related to the teaching you are doing within the instructional sequence (the three-to-four week period of teaching). The section called Selecting a Topic in the certificate-specific portfolio instructions, pages 2-7 and 2-8 offers suggestions designed to help you satisfy the scoring criteria for Entry 1.
Yes. In your certificate-specific portfolio instructions, the fourth bullet under Student Responses Format Specifications, page 2-7, states that the student response must "come from students who are in the class that is the basis for your Written Commentary."
Yes, unless specifically stated otherwise, Instructional Materials may be samples of student work. The important point is that your Instructional Materials help assessors understand what occurred during the lesson.
Yes, both the rubric and the entry instructions specifically state that you must use a variety of resources, including technology, to enhance student learning about mathematics and science. For the Written Commentary, you are asked to cite specific examples from the lesson that show you and your students interacting with technology.
Your whole class may remain in groups during the lesson, but you will only focus on two of the groups for the fifteen minutes of the video segment. Likewise, your discussion in your Written Commentary will focus on only two groups. If you have excessive video footage on a group that you are not addressing in your Written Commentary, the evidence of your adherence to the standards in your teaching practice may not be clear, convincing, and consistent to the assessors.
NOTE: Under Video Recording Format Specifications, you are reminded: "Use a camera angle that includes as many faces of the students in the class as possible." The entire class must be present even for small group recordings.