STEM, Praktikum Pembuatan Alat Peraga Mekanisme Pernapasan Manusia.

Summary

This video guides viewers through a STEM-based practical experiment demonstrating the human respiratory process. The project involves creating a simple model to showcase chest and abdominal breathing. Using everyday materials like a plastic bottle, tubing, and balloons, the experiment allows students to visualize inspiration and expiration. The video emphasizes the integration of science, technology, engineering, and mathematics (STEM), with interactive questions encouraging students to understand the mechanics of breathing. The goal is to engage learners in hands-on learning while reinforcing key concepts related to human respiration.

Takeaways

• 😀 The experiment demonstrates the mechanism of human respiration through a simple model using common materials.
• 😀 The lesson integrates STEM (Science, Technology, Engineering, and Mathematics) by encouraging students to analyze and create models of breathing.
• 😀 Students are tasked with creating a 'Y'-shaped tube model to represent the human respiratory system using plastic tubing.
• 😀 The practical includes constructing a breathing model with materials such as a large plastic bottle, balloons, rubber bands, and clay.
• 😀 The primary objective of the experiment is to show how chest and abdominal breathing work by using balloons as lung models.
• 😀 Students are encouraged to apply mathematical skills by measuring and calculating the materials needed for the project.
• 😀 The technology component of the experiment involves using the internet for learning resources and video editing apps for project presentation.
• 😀 The engineering aspect encourages students to plan and create the respiratory mechanism model using simple, accessible materials.
• 😀 The small balloons represent lungs and demonstrate how they inflate and deflate, simulating the processes of inspiration and expiration.
• 😀 The practical concludes with a discussion of the respiratory process, including how the diaphragm and chest move during breathing.
• 😀 At the end, students answer reflection questions to assess their understanding of respiratory mechanisms and the experiment’s outcome.

Q & A

What is the main objective of this practical activity?

The main objective of this practical activity is to demonstrate the human breathing mechanism by creating a model that simulates chest and abdominal breathing, using simple materials and incorporating STEM (Science, Technology, Engineering, and Mathematics) principles.

What materials are required for building the respiratory mechanism model?

The materials needed are a large plastic bottle, plastic tubing, large and small balloons, rubber bands, clay (plastisin), scissors, and a lighter.

How does the tubing in the model resemble the human respiratory system?

The tubing in the model represents the trachea, which carries air to and from the lungs. The small balloons attached to the tubing represent the lungs, inflating and deflating to simulate the process of breathing.

Why is the plastic bottle cut and used in the model?

The plastic bottle is cut to create a container for the model. The bottom part of the bottle is removed to provide space for the larger balloon, which mimics the chest cavity and helps demonstrate the breathing mechanism.

What role does the large balloon play in the experiment?

The large balloon is stretched over the mouth of the bottle and serves as the 'chest' of the model. It inflates when air is drawn in (inhalation) and deflates when air is released (exhalation), simulating the expansion and contraction of the human chest during breathing.

What is the significance of the small balloons in the model?

The small balloons represent the lungs. When air is drawn into the model, these balloons inflate to simulate inhalation, and when the balloon at the bottom is released, the small balloons deflate, simulating exhalation.

How does the model demonstrate the process of inhalation?

Inhalation is demonstrated by pulling down the balloon at the bottom of the bottle, which creates a vacuum and draws air into the model, inflating the small balloons inside, similar to how the lungs expand during breathing.

What happens when the balloon at the bottom of the bottle is released?

When the balloon at the bottom is released, the small balloons inside the bottle deflate, mimicking the process of exhalation in humans, where air is expelled from the lungs.

What scientific concepts does this activity help students understand?

This activity helps students understand the basic principles of the human respiratory system, specifically the processes of inhalation and exhalation. It also introduces the concept of mechanical ventilation and demonstrates the application of STEM principles in creating a functional model.

What do the students need to do with the materials before starting the experiment?

Before starting the experiment, students must prepare by cutting the plastic tubing into short sections, cutting the bottom of the plastic bottle, and assembling the tubing into a 'Y' shape using glue, ensuring no air is blocked in the system.