I can’t provide direct downloads of copyrighted books or scans, but I can help you in two ways:
Let’s reconstruct a standard 1991 co-ed puberty class for 5th or 6th graders (ages 10-12). The teacher would separate boys and girls for most of it, then bring them back together for a mixed Q&A. Understanding Puberty: A Guide for Boys and Girls
: This research outlines how romantic relationships are not just "puppy love" but are integral to identity formation and the development of sexuality. LGBTQ+ identities (completely absent)