The crew from Modern Marvels on the History Channel visited our science lab back in July to play with some really cold science experiments. In other words, the liquid nitrogen was flowing and the onions were exploding! Mark your calendars… Modern Marvels: Deep Freeze will officially be airing on the History Channel on Tuesday, September 25th at 8pm EST.

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I love Halloween. One of my favorite activities is to “carve” pumpkins using a simple reation inside the fruit. First, you carve the face then carefully replace pieces. After creating a reaction by generating a gas inside and igniting it (ask your local chemistry teacher for the details) the face pieces are blown off with a small explosion.

Halloween is more than 100 days away and I just couldn’t wait. So I initiated the new weather anchor at the local Denver television station by introducing her to carving watermelons. The problem was, we didn’t really carve the watermelon, it exploded. Watch the Video to see how we skipped right over the carving and went straight to exploding.

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Jack is 8 years old and likes to perform (he must get that from his Mom). Three years ago, the owners of Frog Street Press invited Jack to accompany me to their amazing summer conference for teachers called SPLASH. I helped Jack perform his first magic trick in front of a large audience (about 1,200 teachers) and that’s all it took. The Frog Street Press people were kind enough to invite us back this July, and Jack was ready to hit center stage. Jack’s routine is an original twist on a classic magic trick you might have seen performed by another magician using pom-pom balls. The audience in this video consisted of almost 1,700 early childhood educators (primarily pre-K through 2nd grade). Here’s Jack…

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Not exactly… but this stuff is really cool. It’s probably best described as a self-siphoning gel. The chemical is called polyethylene oxide or Polyox and it has an incredibly large molecular weight - about 4 million. When the powder is mixed with water (that’s the tricky part), the liquid becomes very thick and will literally siphon itself from one container to another. As a kid I order a product called Moon Blob - “The Gravity Defying Gel” - which promised to do the same thing. It did… but now I’m doing it as an adult! It’s tough to explain it… just watch the Polyox video.

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As I was driving home this evening, I received a call from a fellow science teacher who shared the news of the passing of Don Herbert. As I reflect on the impact Mr. Wizard had on science education and me personally, I can’t help but be thankful for his dedication and contagious enthusiasm for learning science. It’s difficult to find a science teacher who doesn’t have a favorite Mr. Wizard story. A recently retired teacher loved to tell the story of how Mr. Wizard taught him how to cook a hot dog by literally electrocuting the hot dog using a lamp cord and 120 volts of electricity. I remember watching Mr. Wizard’s World on Nickelodeon in the mid 1980’s and being impressed by the simplicity of the experiments but also the way Don made you want to conduct the experiments at home. Don Herbert made a career out of making science fun.

During the late 1990’s, I was fortunate enough to get to work with Don on several projects, and I took the opportunity to ask for his advice as I started my television career. Don challenged me to do everything in my power to make science accessible to everyone. He reminded me to “be yourself… and don’t let those television producers put you in a white lab coat… just be yourself.” Don always preferred a casual sweater to a lab coat in his later years.

Don received an honorary doctorate from Sacred Heart University in Connecticut and I was invited to share a few science demos during his ceremony. While waiting to go on backstage, Don shared these thoughts on science education… “People call me a science teacher or a scientist, but I’m actually a science entertainer. I think of myself as a person who likes science and has the ability to communicate my enthusiasm about science over the airwaves. I really enjoy being a cheerleader of sorts for science… but I wouldn’t call myself a science teacher. That’s a job I have to leave to the pros.”

In place of their nightly bedtime story, I pulled my first edition copy of Mr. Wizard’s Supermarket Science from the shelves this evening for my boys and shared a few stories about one of the special people who inspired me to be a teacher.

Please click on comments to share your thoughts and memories about Don Herbert.

Visit the official Mr. Wizard website for more information.

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If you’ve ever enjoyed wearing a bottle of Diet Coke after dropping in a roll of Mentos, you know that the reaction is immediate. I’ve always thought that it would be cool if you could slow everything down and really look at the reaction. I shared the idea with our friends at Mentos and they shot this slow motion video. There are a few frames where you can see the carbon dioxide gas coming out of solution being attracted to the tiny pits (nucleation sites) on the surface of the mint. For the tech-nerds in the audience, a Phantom 9.0 high-speed digital camera from Vision Research (2,000 frames per second) captured the slow-motion footage.

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Only a very cool teacher gives this kind of homework to her students… “Using only construction paper and tape, I want you to design a rocket.” Lisa Heaton, the Gifted and Talented teacher showed her students a specially designed rocket launcher made out of PVC plumbing parts from the local hardware store. The idea for the PVC rocket launcher comes from U.S. Space Camp for Educators curriculum. I had the privilege of assisting Mrs. Heaton with the launch of the paper rockets. As the students will share in the comments below, the first launch revealed their design strengths and flaws. The five students with the best launch served as mentors for the rest of the students as they returned to the classroom to repair and redesign their paper rockets. The second launch proved to be the real learning experience - be sure to read comments from the young rocketeers below.

“This rocket launch activity coincides with the students reading Rocket Boys (also known as October Sky) by Homer Hickam. I want these kids to experience first hand the feeling of failure and success through the trial and error process of building their own rockets… and this air-powered rocket launcher does the trick,” says Lisa Heaton as she turns to help a 5th grader repair a rocket that didn’t fair well during the first launch.

These 5th graders are also using this hands-on science experience to learn about the science of blogging (pun intended). Student bloggers from Mrs. Heaton’s class in past years posted blog comments about their rocket experience that were even read by Homer Hickam (the author of October Sky) himself. Be sure to read the student comments below.

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Thousands of science teachers found their way to St. Louis for the 2007 National Science Teachers Association convention, and we wanted to make sure they had something to take back to their students. So, we loaded our trucks with experiments and products from the website along with 5,000 rolls of MENTOS stuffed into plastic test tubes and headed for the Gateway City. We were fortunate to have 14 teacher ambassadors from the Hands-on Science Institute join us in the booth to each share their favorite science activities. Aside from 500 bottles of Diet Coke and a mountain of MENTOS, all eyes were on the 18 foot tall soda eruption chamber. We were demonstrating the new Geyser Tube by triggering a MENTOS geyser as fast as we could set-up a launch (about every 2-3 minutes for 3 full days). At the end of the convention, the soda was gone, the rolls of MENTOS were in the hands of 5,000 teachers, the truck was cleaned out… and we all had a blast. It’s back to the classroom for the 14 ambassadors to start working on cool stuff for next year’s NSTA in Boston.

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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. Thank you very much! Oh! I was also so excited when I ordered a Sonic WackyPack Meal and got your Science Book!!! I did all of the experiments in class for my teacher and classmates. I am so glad that I can purchase some of your science kit items at Hobby Lobby too. I love buying them and showing my friends! Thanks for all you do for kids and teachers. My teacher told me that I should tell you about winning the Science Fair Project with your idea on Ivory Soap. She said that you would be proud of me. I copied your Steve Spangler website logo and displayed it on my Science Fair Project Board to show where I got my information.

Great job Grant! We share these pictures with permission from Grant and his parents.

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Our new Geyser Tube toy made it’s first public appearance at the Toy Fair in New York this morning. If you’ve ever tried to do the Mentos Geyser experiment, you know that it’s tough to a handful of Mentos candies into the bottle of soda before it starts to erupt. The Geyser Tube is a trigger device that holds a stack of Mentos candies directly above the opening of the bottle. Just pull the pin and the Mentos instantly drop into the soda and the soda geyser shoots up through the nozzle at the top of the tube.

Over the past year, we’ve come up with many ways The Geyser Tube attaches to the top of any 2-liter bottle and holdsof sodatrigger device that suspends a stack of Mentos candy above the open bottle of soda. When you pull the pin, the Mentos drop and the erupting soda is funneled updevice that holds

Steve Spangler, a science editor for a Colorado TV station and a toy maker on the side, this week demonstrated his “Geyser Tube” at the Toy Fair in New York. His toy is a plastic tube that can hold nine Mentos candies. A pin holds the candy in place while the tube is screwed to the top of the soda bottle. The opposite end is a narrow opening that acts like a nozzle.

A string is attached to the pin and when pulled, the Mentos plop to the bottom of the bottle, triggering the reaction. The Geyser Tube retails for $4.95 and can be purchased online at Stevespanglerscience.com.

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