To build a portfolio for Direct School Admission (DSA) via innovation, here are some steps you can follow:

1. Understand the requirements: Check the school's website or contact them to understand the requirements for DSA via innovation. This will give you an idea of what you need to include in your portfolio.

2. Showcase your innovation: Include any projects, designs or products that you have created that showcase your innovative skills. This could include photos, videos, and written descriptions of your work.

3. Highlight your achievements: Make sure to include any awards, certificates or recognition you have received for your innovation work. This shows that you are passionate and dedicated to innovation.

4. Include testimonials: If you have worked on innovation projects with others, include testimonials from your team members or mentors. This will demonstrate your ability to collaborate and work effectively in a team.

5. Provide context: Provide some background information on each project or product in your portfolio. Explain the problem you were trying to solve and how your innovation addressed the issue.

6. Keep it organized: Make sure your portfolio is well-organized and easy to navigate. Use headings and subheadings to group similar items together and make sure your portfolio is easy to read.

7. Seek feedback: Get feedback on your portfolio from teachers, mentors, and other professionals. This will help you identify any areas for improvement and make sure your portfolio is as strong as possible.

Remember, the key to a successful DSA via innovation portfolio is to showcase your creativity, problem-solving skills, and passion for innovation.

Here are some project ideas for primary students to showcase innovation:

1. Create a sustainable garden in the school or community.
2. Design and build a robot using a robotics kit.
3. Develop a mobile app that solves a problem in the community.
4. Create an interactive game that teaches others about a specific topic.
5. Design and build a simple machine that solves a real-world problem.
6. Develop an invention to improve daily life, such as a new type of school bag or pencil case.
7. Conduct scientific experiments and present findings in a creative way, such as a science fair project or a science video.
8. Write and illustrate a children's book that teaches about a specific topic, such as environmental conservation or social issues.
9. Create a short film or animation that tells a story or teaches a lesson.
10. Design and build a sustainable home or shelter model using recyclable materials.

These projects can be adapted and modified to suit the age and abilities of primary students.