NOAA
I Can't Breathe!
The Gulf of Mexico dead zone, an area of low oxygen that kills marine life, costs the United States $82 million every year. Young scientists research anoxic ocean environments then come up with a hypothesis for the cause of the Gulf of...
Curated OER
Stratigraphy -- Layers of Time in the Earth
Learners are introduced to the process of stratification. Using the internet, they read about the Richard Beene archeological site near San Antonio. Using a map, they color code the different layers present at this site and answer...
Curated OER
Plants, Plants, and More Plants
Students examine several types of plants. In this plant lesson, students complete activities that require them to identify types of plants, chart plant anatomy, and explain plant propagation.