Scientists make predictions based on data they collect during their experiments. Grill and Katherine Koplik | New York University, New York City | Grade Level: Elementary School | June 11 2012 This will introduce them to the concept of an experiment and why a control is necessary.īy: Ashley C. Students will have the opportunity to conduct an experiment, including controls. Once you know what “normal” is, you can conduct the experiment and compare the results with the “normal.” Relevance to the NIH Mission Looking at the rulers before weights were placed on them allows you to know what “normal” (the control) is in an experiment. The wooden ruler does not bend when weight is placed on it, whereas the flexible ruler does. Why is it important to use the same weight on both rulers?.Why did you look at the rulers before placing the weights on them?.What happened to the flexible ruler when it did not have the weight placed on it?.Did placing the weight on it cause any changes?.What happened to the wooden ruler when it did not have the weight placed on it?.Place the 100-gram weight on the flexible ruler.Note whether the flexible ruler bends without any weight on it.Place the flexible ruler across the two supporting blocks.Do not change the distance between the supporting blocks.Place the 100-gram weight on the wooden ruler.Note whether the wooden ruler bends without any weight on it.Place the wooden ruler across the 2 supporting blocks.Place supporting blocks 6 inches away from each other.This experiment is not considered hazardous. The flimsy ruler (poor posture) will bend when weight is placed on it. The sturdy ruler (perfect posture) will be stronger and will not bend when weight is placed on it. It simulates what happens to a person with good posture vs. This experiment will show what happens when a wooden ruler and a flimsy ruler are exposed to weight. But what happens when you have bad posture? This experiment will demonstrate what can happen when you don’t stand up straight. Many people slouch or lean forward rather than standing up straight. Good posture helps you to breath, prevents your back from hurting, makes you taller, and supports a strong body. By: Ethan Evans, Austin Watters, Connor Hanson, and Adib Babaei | Coppell High School, Coppell | Grade Level: Elementary School | June 6 2012