Recognize when comparisons might not be fair because some conditions
are not kept the same.
| NSES Content Standard A
Science as Inquiry: Abilities necessary to do scientific inquiry Grades K-4, page 122 Plan and conduct a simple investigation. In the earliest years, investigations are largely based on systematic observations. As students develop, they may design and conduct simple experiments to answer questions. The idea of a fair test is possible for many students to consider by fourth grade. |