Students examine different types of soil that have been mixed with water and allowed to settle. Next, they work with a soil model to investigate its components (sand, silt, and clay) and learn how the properties of these components affect the passage or retention of water through the soil and the amount of air in the soil.
Students use the Claim, Evidence, and Reasoning model to evaluate styles of housing used for hens that lay eggs. Using critical thinking and scientific investigation skills, students will compare housing styles, determine which system meets their animal welfare standards, and engineer their own hen house model to meet the needs of laying hens. This lesson covers a socioscientific issue and aims to provide students with tools to evaluate science within the context of social and economic points of view.
In this lesson students will describe the domestic food supply chain and identify the use and types of energy involved in the growth, harvest, processing, transportation, and marketing of an agricultural commodity.
Students study the science of amino acids, proteins, enzymes, and beneficial bacteria to explore the phenomena, "Why does each variety of cheese taste different when the ingredients are the same?"
Students explore the phenomenon of what makes bread dough rise. Using baker's yeast, students will observe alcoholic fermentation and its connection to cellular respiration as they are challenged to act as food scientists and develop the best recipe for quick-rising bread dough.
This lesson allows students to apply the concept of Mendelian genetics and learn about the double muscling trait found in cattle. Students will apply their knowledge of genetics and Punnett squares to calculate the probability of genotypes and use a pedigree chart.
Students learn about DNA by extracting it from strawberries. Students also analyze the similarities and differences of their extraction process to those on Genetic Engineering: The Journey of a Gene. Students learn how genetic testing (including DNA extraction) is useful in breeding new varieties of strawberries.
This lesson introduces students to the relationships between chromosomes, genes, and DNA molecules. Using the example of a strawberry, it also provides activities that clearly show how changes in the DNA of an organism, either naturally or artificially, can cause changes.
Students will simulate the process of gene splicing, understand the application of transgenic organisms in agriculture, and see how goats can be used for the production of goods other than meat and milk through the use of biotechnology.
Students will view the 2014 film Farmland, a documentary spotlighting six farmers and ranchers in the United States. The film portrays the business and lifestyle of a variety of farmers and ranchers. Perspectives on topics such as bioengineered (GMO) crops, animal welfare, organic and conventional farming practices, farm size, farming stereotypes, and more are presented.
Students explore the impact of fertilizer on algae growth, soil erosion, and agricultural soil and water conservation practices.
Students apply the steps of mitosis and meiosis to learn about the production of both seeded and seedless watermelon. Students will learn about the discovery of colchicine, which made seedless watermelon possible and use modeling clay and beans to model meiosis and mitosis.