“Microscope se khula Food ka Secret 🔍|Class 5 TWAU Activity| The Mystery of Food l Food preservation

#kvs #ncert #cbse ✨ Welcome to Learning Vidyalaya ✨ Here, we bring the magic of classrooms alive through fun, meaningful, and hands-on activities for children. This video is based on Class 5 EVS (NCERT) Chapter – “The Mystery of Food” (TWAU) and focuses on microbes, food spoilage, and preservation in a truly experiential learning style. --- 🌟 About the Activity Have you ever wondered why food gets spoiled? Or how small invisible organisms can affect what we eat? In this activity, our students explored the hidden world of microbes using a microscope. For the very first time, they got to see what happens when bread is left in moisture or warmth — and how fungus and bacteria start growing on it. 🔍 Steps of the Activity 1. Preparing the bread sample with moisture and warmth to let fungus grow. 2. Collecting a tiny piece of the fungal growth with forceps and placing it on a clean slide. 3. Covering it with a drop of Lactophenol Cotton Blue solution for fungus or Methylene Blue for bacteria. 4. Placing the coverslip gently to avoid bubbles. 5. Observing the slide under the microscope, starting from 10× objective lens, then zooming in to 40×. 6. Focusing carefully with coarse and fine knobs until the structure became crystal clear. For children, this was like entering a new hidden world where they saw: Tiny thread-like hyphae of fungus spreading like a network. Small spores that help fungus grow further. In bacteria slides, tiny moving dots that looked like little organisms dancing on the slide. --- 😲 Children’s Reaction As soon as the children put their eyes on the microscope, they were shocked and amazed. They exclaimed with excitement — “Wow! Jaldi aao, tum bhi dekho!” It was truly like peeking into a secret world. Their curiosity shot up, and they couldn’t stop sharing the experience with their friends. This is the real power of experiential learning — when children don’t just read from books, but actually see, touch, and feel science in action. --- 🥦 Food Preservation Connection After observing how microbes spoil food, the children were taught three main ways to save food from these tiny organisms: 1. Drying & Dehydration – Removing moisture so that microbes cannot grow. 2. Pickling & Oiling – Using salt, oil, or vinegar to prevent bacterial growth. 3. Refrigeration & Freezing – Slowing down microbial activity by keeping food cold. To make it more practical, the students were given a home task: 👉 “Open your own fridge at home and observe how long vegetables and other food items remain fresh and safe.” This simple activity connected classroom knowledge with real-life practice. Children understood that the fridge in their homes is actually a scientific preservation tool against microbes. ---