This document outlines a weekly science lesson plan for grades 5A and 5B. The plan covers the theme of ecosystems over five days. On Monday, students will discuss living organism interactions in ecosystems. Tuesday focuses on non-living interactions. Wednesday identifies land ecosystem factors, Thursday examines environmental changes, and Friday analyzes invasive species. Each day involves warm-up questions, instruction, modeling, guided and independent tasks, and assessments. Homework consists of presenting the independent task topics orally.