Grades K-4 National Science Standards - Science as Inquiry: I - Form questions about objects, organisms, and events in the environment - Conduct investigations - Physical Science: II - Objects have many observable properties, including size, weight, shape, color, temperature, and the ability to react with other substances. - Objects can be described by the properties of the materials from which they are made. - The position of an object can be described by locating it relative to another object or the background. - An object's motion can be described by tracing and measuring its position over time.