Teach Engineering
Skin and the Effects of Ultraviolet Radiation
Though UV radiation can damage skin, it isn't all bad. The third installment in a six-part series allows the class to study the structure and function of skin. They learn about the different types of skin cancer and the SPF rating...
Curated OER
Skeletal System
Third graders describe and identify the parts of the skeleton and how they support the body. They observe two chicken bones that have been soaked in vinegar for 5 - 7 days. They observe the bone's appearance after it has been removed...
Curated OER
Stomata: Microscopic Openings that Let Plants Breathe
Students participate in a lab experiment to observe and measure the opening and closing of stomata. They focus on photoperiod, locate and identify stomata on a leaf and explain the role of stomata in the daily functioning of a plant.