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Subject: General Science
Semester: 2
Period: 4
Week: 21
School Name:
Teacher’s Name:
Subject: General Science
Grade Level: Grade 5
Date: Week 21
Lesson Duration: 45 minutes
Week & Period: Week 21, Period 4
Topic: One Organized System in Animals
Sub-topic: Digestive system, circulatory system, and excretory system
Learning Objectives
By the end of the lesson, students should be able to describe the digestive process using rice as an example, and explain basic functions of circulatory and excretory systems
Previous Knowledge
Students already know organs and tissues and their basic functions
Instructional Materials
Charts of animal systems, rice for demonstration, handouts, models
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Learners’ Activities (Expanded): Students discuss how food travels through their bodies after eating
Assessment Checks: Teacher asks what happens to food after it is eaten
Notes (Expanded & Detailed): Stimulate curiosity about digestion and body systems
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Learners’ Activities (Expanded): Teacher uses a detailed model or visual chart to show the digestive system step by step, explaining the roles of the mouth (chewing and saliva enzymes), esophagus (food transport), stomach (mechanical churning and chemical digestion), small intestine (nutrient absorption), large intestine (water absorption), and anus (waste elimination). Teacher links the digestive system to the circulatory system by showing how absorbed nutrients enter the blood and are transported to cells. The excretory system is explained using diagrams and practical examples (e.g., kidneys filtering water and waste, urine production). Learners take notes, label diagrams, participate in Q&A, and discuss the importance of each system in daily life. Hands-on activity: learners simulate digestion using layered containers with water, rice, and sponges to represent different digestive stages.
Assessment Checks: Teacher asks learners to trace the journey of food, explain nutrient transport by blood, and describe waste removal by kidneys. Students demonstrate understanding by labeling diagrams and explaining system interactions in their own words.
Notes (Expanded & Detailed): Digestion converts food into nutrients for energy, growth, and repair. The circulatory system carries nutrients and oxygen to cells, while the excretory system removes harmful wastes. Connections between systems show that the body works as a coordinated unit. Examples and analogies (e.g., blood as a delivery truck, kidneys as a filter) help learners visualize complex processes. Encourage discussion of healthy habits, such as balanced diets and hydration, to reinforce learning.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Students summarize the digestive process and functions of circulatory and excretory systems
Evaluation Method (Expanded)
Exit slip/quiz: Students write one function of each system
Teacher will collect slips and provide oral feedback
Assignment (Expanded): Draw and label a diagram showing the digestive system
Follow-up Activity: Observe eating and excretion patterns in a day and record
Differentiation / Inclusive Strategies: Use models and group discussion to support all learners
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low