Teaching others is both an efficient and motivating way to learn. Teaching requires covering the topic oneself first, then being able to articulate the knowledge acquired in a comprehensible way and finally answering questions related to the topic. It also builds confidence in one's skills and competence - as well as reveals opportunities to expand one's knowledge.
Teaching others teaches taking responsibility for the learning of the team and supports knowledge sharing. Giving your team members the chance to shine in presenting and teaching can build their confidence in their own competence.
What would be the right channel for you to regularly share your knowledge on the topic you want to improve in?
What would be the next opportunity for your team to share the teaching responsibility?