Introduction:
The CBSE (Central Board of Secondary Education) Class 9 syllabus includes practical components or projects to provide students with hands-on experience and enhance their understanding of various subjects. These practical components are designed to develop practical skills, critical thinking, and problem-solving abilities among students.

Science:
1. Science Experiments: The CBSE Class 9 Science syllabus includes a list of experiments that students need to perform in the laboratory. These experiments cover various topics such as motion, force, energy, acids and bases, and more. Students are required to record observations, draw conclusions, and write detailed reports on these experiments.

2. Science Projects: Students are also required to undertake science projects on topics related to their syllabus. These projects involve conducting research, collecting data, and presenting their findings in the form of a project report or presentation. These projects encourage students to explore scientific concepts in depth and develop their research skills.

Mathematics:
1. Geometry Construction: The CBSE Class 9 Mathematics syllabus includes construction-based questions where students have to construct various geometrical figures using a compass, ruler, and protractor. These constructions help students visualize geometric concepts and understand the properties of different shapes.

2. Data Handling: Students are also required to analyze and interpret data through various graphical representations like bar graphs, pie charts, and histograms. They learn to represent data effectively and draw conclusions based on the given information. These activities enhance their data handling and interpretation skills.

Computer Science:
1. Programming: The CBSE Class 9 Computer Science syllabus includes programming concepts and coding exercises. Students learn to write programs using programming languages like Python or Scratch. They develop logical thinking, problem-solving abilities, and computational skills through these programming exercises.

2. Website Development: Students are introduced to website development concepts and are required to create a simple website using HTML and CSS. They learn to design web pages, add content, format text, and create interactive elements. This practical component helps students understand the basics of web development and design.

Social Science:
1. Map Work: The CBSE Class 9 Social Science syllabus includes map work where students have to locate and label different places, rivers, mountains, etc., on maps of India, continents, and the world. This activity enhances their geographical knowledge, map-reading skills, and understanding of spatial relationships.

2. Survey and Data Collection: Students are also required to conduct surveys, collect data, and analyze it to draw conclusions about social and economic phenomena. This practical component helps students develop research skills, data analysis abilities, and critical thinking.

These practical components and projects in the CBSE Class 9 syllabus play a crucial role in reinforcing theoretical concepts, promoting experiential learning, and fostering the overall development of students. They encourage active participation, creativity, and application of knowledge, making the learning process more engaging and meaningful.