Yes, there are experiments and practical activities mentioned in the textbook.

Experiment 1: To understand the concept of evaporation
The textbook mentions an experiment to help students understand the concept of evaporation. It asks the students to take a glass of water and leave it uncovered for a few days. They are then asked to observe what happens to the water level. The experiment aims to demonstrate how water evaporates and changes from a liquid to a gas.

Experiment 2: To understand the concept of germination
Another experiment mentioned in the textbook is related to the concept of germination. Students are asked to take two small pots and fill them with soil. They are then instructed to plant a seed in each pot and water them regularly. The students are encouraged to observe the growth of the plants and note down their observations. This experiment helps students understand the process of germination and the factors necessary for plant growth.

Experiment 3: To understand the concept of magnetism
The textbook also includes an experiment to explain the concept of magnetism. Students are asked to take a magnet and some iron filings. They are instructed to move the magnet over the iron filings and observe what happens. The experiment helps students understand how magnets attract certain materials and the concept of magnetic force.

Experiment 4: To understand the concept of buoyancy
There is also an experiment mentioned in the textbook to explain the concept of buoyancy. Students are asked to take a bowl of water and some objects of different materials, such as a paperclip, a small piece of wood, and a coin. They are instructed to drop each object into the water and observe what happens. The experiment helps students understand how different materials float or sink in water and the concept of buoyancy.

These experiments and practical activities mentioned in the textbook provide hands-on learning experiences for students. They help them understand scientific concepts through observation and experimentation. By engaging in these activities, students develop critical thinking skills and a deeper understanding of the topics being taught.