Introduction:
In CBSE Class 1, Science is introduced to students in a fun and engaging manner. While there may not be complex experiments involved, practical activities are designed to help students understand basic scientific concepts and develop their observational skills. These activities are usually conducted within the classroom environment using simple materials that are easily accessible.

Practical Activities and Experiments:

1. Plant Observation:
Students are encouraged to bring a small plant to the classroom. They observe the plant closely, noting its parts such as leaves, stem, and roots. They also learn about the basic needs of plants, including water, sunlight, and air.

2. Water Experiment:
Students are given two glasses of water, one with warm water and the other with cold water. They are asked to dip one hand in each glass and observe the difference in temperature. This experiment helps them understand the concept of temperature and how it affects the sensation of touch.

3. Magnet Activity:
Students are given different objects made of different materials, such as plastic, wood, and metal. They are then asked to test each object with a magnet and identify which objects are attracted to the magnet. This activity introduces them to the concept of magnetism and the properties of different materials.

4. Floating and Sinking:
Students are provided with various objects, such as a stone, cork, and a plastic toy. They are asked to predict whether each object will float or sink in water. They then test their predictions by placing the objects in a container of water. This experiment helps them understand the concept of buoyancy and the properties of different materials.

5. Sound Activity:
Students are asked to close their eyes and identify different sounds around them, such as a bell ringing or a clap. They learn about the sense of hearing and how sound is produced.

Conclusion:
Practical activities and experiments in CBSE Class 1 Science aim to develop students' curiosity, observation skills, and basic understanding of scientific concepts. These activities are designed to be age-appropriate, engaging, and help students grasp fundamental scientific ideas. By actively participating in these activities, students can lay a strong foundation for future scientific exploration and learning.