I think this quote means if you tell somebody something they might forget because that person forgot what the other person told them. If you show somebody something they might remember because you showed them something and they could have it in their mind so they can remember. If you involve somebody in a group,they may understand. For an example, my brother told me something important and I forgot. My sister Aaliyah showed me a picture of Barack Obama on a flag and a week later I still remember what she showed me. My friends involved me in Environmental Club because they know I love nature. Now that I am involved in Environmental Club, I understand nature better. That’s what I think this proverb means to me.