Objective: To understand the role of muscle contraction and relaxation in arm movementMaterials: Several booksSteps: Hold a book in your hand Bend your arm to bring the forearm closer to the shoulder and observe the muscle in the front of the arm (biceps) Straighten your arm downward to move the for......

Keywords: Reaction time – Sight – Hearing – Nervous system – Reflexes

Keywords: Light – Sight – Eye – Vision – Light perception

Keywords: Myopia – Hyperopia – Astigmatism – Lenses – Vision

Keywords: Lungs – Respiration – Diaphragm – Air – Respiratory system

Keywords: Spine – Vertebrae – Support – Protection – Spinal cord

Keywords: Large intestine – Water absorption – Waste excretion – Beneficial bacteria

Keywords: Feathers – Birds – Aerodynamic lift – Streamlining – Flight

Keywords: Animal body parts – Functions – Movement – Feeding

Objective: To identify the components of the immune system in the human body.Materials: Diagram of the immune systemSteps:Identify the immune system organs in the diagram.Match the organs with their cards in the model.Connect each organ to its function in defending the body.Compare innate and adapti......

Objective: To prove that exhaled air contains less oxygen compared to atmospheric air.Materials: Large container with screw cap – water container – rubber tube – candle.Procedure: Fill the large container with water. Place the rubber tube through the cap and invert the container in the water, ensuri......