Curated OER
Human Reproductive Cells Quiz
Quiz your learners on human reproductive cells using this terminology assessment tool! Choose 1 of 2 options: have students play online, or make copies of the paper version. The advantage to playing the online matching game is its...
Cold Spring Harbor Laboratory
Specialized Chromosomes Determine Gender
Are you an XX or an XY? Budding scientists learn about cellular fertilization and the determination of gender in a thorough online lesson. They follow their study with a set of interactive reflection questions.