There are several steps that Sahil can take to organize the activity to teach the topic effectively. Here is a suggested plan:

1. Define the learning objectives: Sahil should start by clearly defining the learning objectives of the activity. What specific knowledge or skills does he want the participants to gain? Having clear objectives will help guide the planning process.

2. Choose the appropriate teaching method: Sahil should consider the best teaching method to deliver the content. This could include lectures, group discussions, hands-on activities, demonstrations, or a combination of these. The teaching method should align with the learning objectives and cater to the participants' needs and preferences.

3. Prepare the necessary materials: Sahil should gather and prepare all the materials that will be needed for the activity. This could include handouts, presentations, visual aids, props, or any other resources that will enhance the learning experience. He should ensure that the materials are organized and easily accessible during the activity.

4. Create a detailed lesson plan: Sahil should create a detailed lesson plan that outlines the structure and flow of the activity. The lesson plan should include an introduction, main content delivery, interactive elements, practice exercises, and a conclusion. It should also include estimated time frames for each section to ensure that the activity stays on track.

5. Consider the participants' needs: Sahil should consider the participants' needs and tailor the activity accordingly. This could include adapting the content to different learning styles, providing additional resources or support for those who need it, or incorporating interactive elements to engage participants of various skill levels.

6. Engage the participants: Sahil should design the activity in a way that actively engages the participants. This could include incorporating interactive exercises, group work, case studies, or real-life examples. Encouraging active participation will increase the participants' understanding and retention of the topic.

7. Assess learning outcomes: Sahil should include a form of assessment to evaluate the participants' learning outcomes. This could be in the form of quizzes, group discussions, practical exercises, or any other method that aligns with the learning objectives. Assessing the learning outcomes will help Sahil gauge the effectiveness of the activity and identify areas for improvement.

8. Reflect and make improvements: After the activity, Sahil should reflect on the effectiveness of the teaching methods and materials used. He should gather feedback from the participants to understand their experience and identify any areas for improvement. This feedback can be used to refine future activities and enhance the learning experience.

By following these steps, Sahil can organize an activity that effectively teaches the topic and engages the participants in the learning process.