Summary

• Description:

  The MS Word document comprises Grade 10 CBC Biology Term 3 2026 Scheme of Work tailored for senior school biology educators under the Competency-Based Curriculum (CBC) framework established by the Kenya Institute of Curriculum Development (KICD). This comprehensive pedagogical document offers a structured, step-by-step framework for teaching animal anatomy and physiology. It serves as an essential tool for scheme alignment, lesson plan preparation, classroom laboratory execution, and systematic syllabus tracking during the third term of the academic year.

  The entire term's learning is centered on Strand 3.0, "Anatomy and Physiology of Animals," providing an in-depth exploration of two critical biological sub-strands: Sub-Strand 3.2 ("Transport in Animals") and Sub-Strand 3.3 ("Gaseous Exchange and Respiration in Animals"). The curriculum progresses from surface area-to-volume ratio constraints in multicellular organisms to open versus closed and single versus double circulatory systems. Detailed studies cover the mammalian heart, cardiac cycle dynamics, lymphatic drainage, immune defense, blood clotting cascades, and ABO/Rhesus blood grouping compatibility. In the second section, learners analyze respiratory surface adaptations across insects, fish, amphibians, birds, and humans; investigate ventilation mechanics; perform small mammal dissections; explore aerobic and anaerobic respiration pathways, oxygen debt, and Respiratory Quotient (RQ) calculations; and conduct experimental respirometer investigations and exercise-induced physiological assessments.

  Key Scheme Details

  • Education Level: Grade 10 (Senior School)
  • Subject: Biology
  • Term: Term 3
  • Year: 2026
  • Curriculum: KICD Competency-Based Curriculum (CBC) 2025 Framework
  • Number of Weeks Covered: 9 Calendar Weeks
  • Number of Teaching Weeks: 8 Weeks
  • Number of Lessons per Week: 5 Lessons
  • Total Number of Lessons: 40 Lessons
  • Half-Term/Mid-Term Break: Week 7 (7 October 2026 – 11 October 2026)
  • Examination/Assessment Period: Week 8 (Theory & Practical Exams)
  • Strand Covered: Anatomy and Physiology of Animals
  • Sub-Strands Covered: Transport in Animals, Gaseous Exchange and Respiration in Animals, Integrated Reviews and Terminal Assessments
  • Assessment Methods: Oral questioning, written assignments/tests, scientific drawing evaluation, practical observation checklists, flowchart grading, comparative matrix scoring, respirometer graphing checks, project model rubrics, portfolio review
  • Learning Resources: Grade 10 Biology Curriculum Design, preserved heart and respiratory specimens, small mammal dissection kits and trays, 3D heart models, photomicrographs, bell jars, Y-tubes, balloons, rubber sheets, respirometers, soda lime, capillary tubes, stopwatches, ABO/Rh testing charts, past exam papers, marking schemes

  Weekly Coverage

  • Week 1: Transport Systems & Heart Anatomy — Need for transport systems (surface area-to-volume ratio), transport structures across animal taxa, open vs. closed and single vs. double circulation, external/internal mammalian heart anatomy, and cardiac cycle mechanics (systole and diastole).
  • Week 2: Dissection, Lymphatics & Blood Physiology — Practical small mammal dissection to reveal circulatory organs, human lymphatic system and tissue fluid formation, immune cell functions (phagocytes vs. lymphocytes), blood clotting cascade, and ABO blood grouping compatibility.
  • Week 3: Rhesus Factor, Blood Safety & Respiratory Adaptations — Rhesus factor implications (erythroblastosis foetalis), blood transfusion screening protocols, respiratory surface characteristics, insect tracheal system and fish gill counter-current flow, and amphibian skin/lung and bird air sac adaptations.
  • Week 4: Human Respiratory System & Respiration Basics — Human respiratory tract structure and alveolar adaptations, ventilation mechanics (thoracic pressure/volume changes), practical dissection of mammalian respiratory organs, construction of working bell jar breathing models, and aerobic cellular respiration equations.
  • Week 5: Anaerobic Respiration, Energy & Respiratory Quotient — Anaerobic respiration in muscle tissue, lactic acid accumulation and oxygen debt, comparing aerobic vs. anaerobic energy yields, factors affecting human daily caloric requirements, and calculating Respiratory Quotient (RQ) for carbohydrates, lipids, and proteins.
  • Week 6: Experimental Respirometry & Sub-Strand Review — Designing respirometer experiments to measure invertebrate respiration rates, investigating exercise effects on human breathing and heart rates, comprehensive review of animal transport, and integrated review of gaseous exchange and respiration.
  • Week 7: Mid-Term Break — Scheduled mid-term break from 7 October 2026 to 11 October 2026.
  • Week 8: Comprehensive Revision & End-of-Term Examinations — High-order theory problem solving, practical drawing and specimen identification drills, sitting for the End-of-Term Written Theory Exam and Practical Lab Exam, and review of exam marking schemes.
  • Week 9: Project Evaluation, Portfolio Review & Laboratory Closing — Evaluating working bell jar/syringe breathing models, consolidating student biology learning portfolios, sanitizing and storing laboratory tools/respirometers, and issuing vacation assignment guidelines.

  Strands and Sub-Strands Covered

  • Strand 3.0: Anatomy and Physiology of Animals
    • Sub-Strand 3.2: Transport in Animals
      • Surface area-to-volume ratio limitations and necessity of circulatory systems
      • Comparative transport structures in insects, fish, amphibians, reptiles, and mammals
      • Open vs. closed systems and single vs. double circulation pressure dynamics
      • Mammalian heart anatomy, coronary vessels, and cardiac cycle pumping mechanics
      • Lymphatic drainage, capillary exchange, and tissue fluid dynamics
      • Immunity (phagocytosis and antibody action) and the blood clotting enzyme cascade
      • ABO and Rhesus blood grouping systems, agglutination, and donor compatibility
    • Sub-Strand 3.3: Gaseous Exchange and Respiration in Animals
      • Structural characteristics of respiratory surfaces: moisture, thinness, surface area, vascularization
      • Adaptations of insect spiracles/tracheae, fish gill filaments/counter-current exchange
      • Cutaneous/pulmonary exchange in amphibians and continuous airflow air sacs in birds
      • Human respiratory anatomy, ciliated epithelium, and alveolar capillary networks
      • Ventilation mechanics: intercostal muscle, diaphragm, volume, and pressure changes
      • Aerobic respiration, ATP generation, anaerobic lactic acid fermentation, and oxygen debt
      • Factors influencing Basal Metabolic Rate (BMR) and Respiratory Quotient ($RQ = \frac{\text{CO}_2}{\text{O}_2}$)
      • Respirometer experiment design and physiological responses to physical exercise

  The scheme covers the following key topics and learning areas:

  • Animal Circulatory Physiology and Hematology
    • Heart chamber muscle thickness, one-way valves, and systemic/pulmonary circuits
    • Atrial systole, ventricular systole, diastole, and pressure-volume loop changes
    • Prothrombin-thrombin-fibrinogen clotting pathway, platelets, Vitamin K, and calcium ions
    • Blood antigen-antibody agglutination, Rh sensitization in pregnancy, and blood bank screening
  • Comparative Respiratory Mechanisms and Human Ventilation
    • Spiracle control, chitinous tracheae, gill arch/raker/filament structures, and counter-current efficiency
    • Inspiration and expiration dynamics: ribcage elevation, diaphragm flattening, and thoracic pressure drops
    • Dissection procedures for observing mammalian heart and lungs in situ
    • Working mechanical breathing simulation using bell jars, Y-tubes, and rubber diaphragms
  • Cellular Bioenergetics, Respirometry, and Human Fitness
    • Mitochondrial oxidation of glucose, chemical equations, and ATP energy currency
    • Lactic acid conversion in the liver and rapid post-exercise oxygen debt repayment
    • Mathematical deduction of RQ values for carbohydrate ($1.0$), protein ($0.9$), and lipid ($0.7$) substrates
    • Experimental control of variables in respirometers and graphing resting vs. post-exercise heart/breathing rates

  Learning Outcomes and Competencies

  This scheme fosters advanced scientific inquiry, analytical thinking, and practical laboratory execution. Learners develop observational precision through specimen dissections and microscopic examination, mathematical competence through RQ calculations and rate graphing, and creative engineering skills through working model assembly. The curriculum builds critical thinking by applying blood grouping principles to transfusion scenarios and metabolic data to daily caloric needs. Furthermore, learners cultivate environmental responsibility, ethical specimen handling, personal health awareness, and team collaboration skills required for higher education in biological and medical sciences.

  Learning Experiences and Practical Activities

  Learners engage in a wide range of practical experiences, including inspecting preserved mammalian hearts, watching 3D cardiac animations, tracing blood flow pathways, and humanely dissecting small mammals to examine thoracic organs in situ. Practical activities include performing paper-strip test scenarios for ABO/Rhesus compatibility, collecting locusts to examine spiracles, inspecting fresh fish gills under hand lenses, and constructing working bell jar breathing models with Y-tubes and rubber sheets. Additionally, learners write balanced metabolic equations, calculate RQ values from chemical equations, assemble capillary respirometers using soda lime to track invertebrate oxygen consumption, measure resting versus post-exercise breathing rates, and draw scientific diagrams adhering to strict biological drawing rules.

  Assessment Methods

  • Continuous and Formative Assessment: Diagnostic oral questions, classroom discussions, peer evaluation during group tasks, and review of learning journal entries.
  • Practical and Observational Assessment: Scoring rubrics for scientific drawings of heart and lung sections, practical dissection checklists, evaluation of working bell jar models, respirometer experimental setup checks, and exercise graph plotting assessments.
  • Summative Assessment: Written structured sub-strand quizzes, matrix completion tasks, a formal End-of-Term Written Theory Examination, a hands-on End-of-Term Practical Examination, and comprehensive portfolio review.

  Learning Resources

  • Laboratory Equipment and Instruments: Dissection kits, dissecting trays, preserved mammalian hearts, small mammal specimens, hand lenses, microscopes, bell jars, Y-tubes, balloons, rubber sheets, capillary respirometers, soda lime, stopwatches, and graduated cylinders.
  • Reagents and Biological Samples: Fresh fish gills, locust/grasshopper specimens, live small invertebrates (maggots/locusts), lime water, distilled water, and colored indicator liquids.
  • Textual and Visual Media: Grade 10 Biology Curriculum Design (KICD 2025), 3D heart/respiratory animations, photomicrographs, blood grouping compatibility grids, activity cards, graph paper, past examination papers, and official marking schemes.
• Category:

  Schemes of Work
• Level:

  Grade 10
• Subject:

  BIOLOGY
• Posted By:

  Caleb_Peter

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