Curated OER
Necessary Nitrogen
Students view a video that presents the biogeochemical cycle of nitrogen. They compare types of soils and consider how different fertilizers affect soil composition.
Curated OER
Ice Cream
Open this instructional activity by giving a brief history of ice cream. Using liquid nitrogen to lower the temperature, preteens make their own confection. The accompanying activity sheet queries learners about freezing point, the...
Curated OER
Chemistry and Commercial Fertilizers
Students listen as the teacher lectures about the history of commercial fertilizers. The instructional activity includes extensive information for the teacher. Following the lecture, students complete a worksheet titled "Nitrogen Cycle...
Curated OER
Heat of Vaporization of Liquid Nitrogen
Students determine the heat energy needed to vaporize (boil) one gram of liquid nitrogen.
Curated OER
Nucleic Acids
A lively presentation presents general facts and history of nucleic acids in a note-taking format. Every slide contains colorful photos or graphics to illuminate and engage. Biology aces learn about the function and structure of these...
Science Geek
Covalent Bonding
When it comes to covalent bonds, sharing is caring. Presentation covers the octet rule with multiple examples, Lewis Dot Structures with an example, and resonance. Presentation is the first in a five-part series.
Curated OER
How about a Little Give and Take?
Middle schoolers design a closed system to test the relationships between plants and animals. They monitor abiotic fluctuations within this living system by using a chemical test kit. They observe how living organisms respond to...
Curated OER
Biological Sciences
Students examine biodiversity and interrelatedness concepts. In this ecology lesson students go on a field trip and fill out a data sheet.
Curated OER
Ecology and the St. Lawrence River
Ninth graders complete a unit of lessons on ecosystems, organism interactions, and energy flow. They create a key for known species of fish, diagram the movement of energy through an ecosystem, and create and present food chains and food...