No one cared that it was cold outside. These kids could hardly wait to see what would happen next. Giggles and laughter bounced from child to child as the group of second graders positioned themselves around the 2-liter bottle of diet soda.
In a whispered voice, one boy asked, “Do you really think she’s going to do it?”
“Sure… she’ll do it, but you have to get ready to run,” replied the girl standing next to him.
Mrs. Schmidt removed the roll of Mentos mints from her pocket and loaded them into a small tube that attached to the top of the soda bottle. The only thing that kept the Mentos from falling into the soda was a plastic pin tied to a piece of string.
“Are you ready?” Mrs. Schmidt asked.
“YES!” shouted the students who could hardly contain themselves.
“Three… Two… One… Go!”
It all happened in a fraction of a second. Mrs. Schmidt pulled the string, the Mentos fell into the soda and a giant soda geyser shot up everywhere. It was raining Diet Coke! As soon as the soda started to spray, the children scattered.
The students screamed, “That was awesome… do it again!”
As parents, we know it’s important for our children to wear safety helmets when biking, skiing, skating or participating in any activity where there’s a chance of a fall or crash. But have you ever wondered which helmets are the best in protecting their noggins?
Third grader Jack Liebold took this question on for his science fair project. The problem? How do you test helmets without using real crash test people? Easy. He used honeydew melons to use the scientific method and test his hypothesis.
Jack joined me during my weekly newscast experiment on 9News to share his results and how he conducted his experiment.
You might have seen t-shirts or special jewelry (beads) that changes color in sunlight. UV Beads look like ordinary white beads used to make a craft project, but embedded in the plastic is a special pigment that changes color when exposed to ultraviolet light. The color change takes place in just seconds – almost like magic. Mrs. Bratteli’s Third Grade Class from Aikin Elementary School in Paris, Texas, used the beads as a way to see if sunscreen lotion really blocks out harmful ultraviolet light from the sun.
We did an experiment with your UV beads and sunscreen and the types were 10, 30, and 50 SPF. We put them each on a foam plate and had a nothing plate. [control—no sunscreen] They changed colors exactly how they were supposed to, but the 50 you couldn’t see. Read the full experiment write-up.
But, like all good experiments, these third graders discovered something else…
We left them all over the weekend and here are our results. The SPF 50 sunscreen also ate through the Styrofoam plate! The spf 10
Brandt Callahan and Jackson Bartlett, who go to Parkview Intermediate School in Bedford, Indiana, took the Experiment of the Week and won FIRST PRIZE in the third grade division of the Science Fair!
In fact, Brandt and Jackson added a little OOMPH to the experiment by using several different kinds of cereal instead of just one, and using a blender instead of a baggie and their hands.The boys admit that most of the cereals they used just didn’t seem to have any iron in them, in spite of what their labels claimed.
Next time, they’re going to use Life cereal, because they want to SEE the little black dots of iron! They’ve also decided that there definitely won’t be any raisins involved – the ICK factor was just too high with raisins.
Brandt and Jackson are in the third grade, and they learned about this experiment from their teacher.Jackson had won First Prize in first grade, and
It’s great to get emails with this subject line… My science fair project placed 1st from an idea from your website! Grant Smith is a 4th grader at S&S Elementary in Sherman, Texas. The “S&S” two small towns, Southmayd and Sadler, are approximately one hour north of Dallas. Grant used our website as a resource to expand on the idea of the Growing Ivory Soap experiment. Here’s Grant’s email about his award…
Mr. Steve Spangler,
My 4th Grade Teacher has taught us many cool Science experiments from your website. I got on your website to give me an idea for my Science Fair Project. I proved that Ivory Soap has air inside of it by showing it floats and expanding it in the microwave. Last week I placed 1st in the 4th Grade that earned me the “Chief Scientist” Certificate. I am very proud of it. I wanted to tell you thank you for your cool website. My teacher loves going to your workshops and showing us your videos too. We learn a whole lot from your website, kits, and books.
No one cared that it was cold outside. These kids could hardly wait to see what would happen next. Giggles and laughter bounced from child to child as the group of second graders positioned themselves around the 2-liter bottle of diet soda.
You might have seen t-shirts or special jewelry (beads) that changes color in sunlight. 
It’s great to get emails with this subject line… My science fair project placed 1st from an idea from your website! Grant Smith is a 4th grader at S&S Elementary in Sherman, Texas. The “S&S” two small towns, Southmayd and Sadler, are approximately one hour north of Dallas. Grant used our website as a resource to expand on the idea of the 
Project. I proved that Ivory Soap has air inside of it by showing it floats and expanding it in the microwave. Last week I placed 1st in the 4th Grade that earned me the “Chief Scientist” Certificate. I am very proud of it. I wanted to tell you thank you for your cool website. My teacher loves going to your workshops and showing us your videos too. We learn a whole lot from your website, kits, and books. 
