Overview

Homeostasis & Body Systems in Grade 9 Science (TEKS) helps students explain how organ systems maintain internal balance through regulation, signaling, and feedback. This Lesson Bundle includes 10 TEKS-aligned worksheets that connect structure to function across the body, from tissue organization to membrane transport and long-term glucose control. Students practice using models and evidence to predict how changes in one system affect others.

What's Included

• ✅ Grade 9 Science | Organ Systems Worksheet | TEKS-Aligned – Students connect major organ systems to their core roles in maintaining internal conditions.
• ✅ Grade 9 Science | Neuroendocrine Control Worksheet | TEKS-Aligned – Students analyze how nervous and endocrine systems coordinate responses.
• ✅ Grade 9 Science | Cardiopulmonary Interaction Worksheet | TEKS-Aligned – Students investigate how circulation and gas exchange work together.
• ✅ Grade 9 Science | Tissue Structure Worksheet | TEKS-Aligned – Students examine how tissue organization supports system-level function.
• ✅ Grade 9 Science | Thermoregulation Worksheet | TEKS-Aligned – Students describe mechanisms that stabilize body temperature under changing conditions.
• ✅ Grade 9 Science | Renal Regulation Worksheet | TEKS-Aligned – Students interpret how kidneys regulate fluids and dissolved substances.
• ✅ Grade 9 Science | Membrane Transport Worksheet | TEKS-Aligned – Students explain diffusion, osmosis, and transport in maintaining cell balance.
• ✅ Grade 9 Science | Glucose Regulation Worksheet | TEKS-Aligned – Students model how the body regulates blood glucose using feedback principles.
• ✅ Grade 9 Science | Feedback Principles Worksheet | TEKS-Aligned – Students practice identifying positive and negative feedback in real scenarios.
• ✅ Grade 9 Science | Cell Signaling Worksheet | TEKS-Aligned – Students trace how cells communicate to coordinate homeostatic responses.

Skills & Standards

Aligned to TEKS, these worksheets build skills for HS science by emphasizing cause-and-effect reasoning, evidence-based explanations, and scientific modeling. Students connect crosscutting concepts such as systems and system models, structure and function, and energy and matter flows to body processes that regulate internal conditions. Throughout the unit, students use diagrams and scenario-based data to:

• Model how organ systems interact to support homeostasis.
• Use feedback logic to predict outcomes when variables change.
• Explain how cell signaling and neuroendocrine control coordinate responses.
• Analyze how tissue structure relates to transport, regulation, and communication.
• Support claims with structured reasoning about membrane transport, thermoregulation, and glucose/renal regulation.

Perfect For

• Teachers seeking structured instruction
• Sub plans
• Homework or review
• Intervention or centers
• Assessment preparation

How to Use

Use this single unit over a typical 1–3 week pacing plan, depending on your class schedule. Start with the Organ Systems worksheet as a concept organizer, then move in order from control (neuroendocrine, signaling) to regulation topics (thermoregulation, renal regulation, glucose regulation) and finish with feedback principles to synthesize connections across systems. Try three routines: (1) open each lesson with a 5-minute warm-up prompt that asks students to predict system effects, (2) use guided practice on one worksheet per day with teacher modeling of “claim-evidence-reasoning,” and (3) close each section with an exit ticket that targets one crosscutting idea (e.g., structure/function or systems interactions).

Closing

Build confident understanding of Homeostasis & Body Systems by having students explain regulation processes using TEKS-aligned reasoning and models.