Curated OER
Estimating Loggerhead Hatchling Gender Ratios
Learners study sea turtles and the concept of temperature-dependent sex determination (TSD). Using a specific set of temperature data, they determine the probable sex of a nest of sea turtle hatchlings and then determine the overall...
Curated OER
Assessment & Evaluation
Seventh graders study elapsed time, radioactive decay and half-life. In this time machine lesson students complete several activities and view a presentation.