4.6 Evaluate a simple procedure to carry out an exploration. 4.8 Evaluate observations and measurements made by other persons. Performance objectives are written at three levels knowledge, concept understanding, and application. Using these assessment items gives the teacher an observable indication of the student s understanding of scientific concepts. Organisms can live only in places where their needs are met.
All animals depend on plants for food.
Other animals eat animals that eat plants. The world has many different environments, and distinct environments support the life of different types of organisms. Define ecosystem and explore various ecosystems. 3.ORG.3 Explore how basic needs change according to changes in the ecosystem. 3.ORG.4 Explain a food chain.