Systematic investigations require standard measures (metric), consistent and reliable and organized reporting of data. The way the data are displayed can make it easier to uncover important information. This can assist in making reliable scientific forecasts of future events. Elapsed time is the amount of time that has passed between two given times. (See Grade Four Mathematics Curriculum Framework, Standard 4.9, page 24.) An experiment is a fair test driven by a hypothesis. A fair test is one in which only one variable is compared. A hypothesis is a prediction about the relationship between variables. A hypothesis is an educated guess/prediction about what will happen based on what you already know and what you have already learned from your research. It must be worded so that it is “testable.” In order to conduct an experiment, one must recognize all of the potential variables or changes that can affect its outcome. An independent variable is the factor in an experiment that is altered by the experimenter. The independent variable is purposely changed or manipulated.
Systematic investigations require standard measures (metric), consistent and reliable and organized reporting of data. The way the data are displayed can make it easier to uncover important information. This can assist in making reliable scientific forecasts of future events. Elapsed time is the amount of time that has passed between two given times. (See Grade Four Mathematics Curriculum Framework, Standard 4.9, page 24.) An experiment is a fair test driven by a hypothesis. A fair test is one in which only one variable is compared. A hypothesis is a prediction about the relationship between variables. A hypothesis is an educated guess/prediction about what will happen based on what you already know and what you have already learned from your research. It must be worded so that it is “testable.” In order to conduct an experiment, one must recognize all of the potential variables or changes that can affect its outcome. An independent variable is the factor in an experiment that is altered by the experimenter. The independent variable is purposely changed or manipulated.