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Twelfth Grade Science Experiments (top 2,000 results)

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Candy Corn Geodesic Dome
Blog Post
A classic science (and geometry) project takes on Halloween tones with candy corn-colored candies, a few ordinary toothpicks, and a bunch of triangles. We are big fans in my house of the geodesic dome. We initially tried a bigger-than-expected version made from straws a few years ago. We had a great time putting it together—but it would not fit through the front door! Making a small-scale geodesic dome from gummy candies is a much easier and… Read more
Candy Experiments: Doing Fun Science at Home during School Closures (Activity #23)
Blog Post
Follow along with a Science Buddies parent who is using family STEM activities to keep her kids learning at home during the COVID-19 school shutdown. New posts every Monday, Wednesday, and Friday. Today's adventure... experimenting with how candy coatings dissolve and the colors mix. An Experiment Full of Candy Makes the Whining Go Down Have you experienced a day during this quarantine when the whole family just seems to hit a wall? Everyone is… Read more
Carbon Filters and Adsorbing Science
Blog Post
Explore the science behind a carbon filter with a fun hands-on family STEM activity. Now you see the color... and now you don't! Water filters that use activated carbon can help "clean" water. You might be able to see the difference the filter makes, but not always. In this week's family science activity, families can explore the way these filters work with a colorful hands-on project that makes stripping the color from a sports drink or colored soda… Read more
Carnival Game Science: Weekly Science Project Idea and Home Science Activity Spotlight
Blog Post
In this week's spotlight: a mechanical engineering experiment and family science activity that takes a scientific look at why a popular carnival game may look easy to win but may, in fact, be really difficult. How does the distribution of mass in the way milk bottles (or plastic bottles of colored water!) are stacked affect how hard or easy it is to knock the bottles over? Put the question to the test with your own home version of a classic carnival game! Knock Your Blocks Off: The… Read more
Catalytic RNA and Structure
Science Fair Project Idea
Scientific Method
Some sequences of RNA can catalyze biochemical reactions, much like protein enzymes. These catalytic RNA sequences are called ribozymes. The function of a ribozyme depends upon the primary sequence of the RNA which folds into a 3-D structure. How do different ribozyme sequences fold? You can search for ribozyme sequences using Entrez BLAST (NCBI, 2006). Then you can use a program like MFOLD (http://bioweb.pasteur.fr/seqanal/interfaces/mfold-simple.html) to submit your sequence for an… Read more
CD Burning: Take it to the Edge
Science Fair Project Idea
Scientific Method
Did you know that you can tell how much information is on a CD-R without even using a computer? Find out how in this "reflective" experiment. Read more
Celebrate Engineers Week with 15+ Hands-on STEM Projects
Blog Post
Science Buddies has great ideas for engineering projects and activities you can do with your students to celebrate Engineers Week. With the right project, integrating a hands-on STEM activity is something all teachers can do! Marble Machine Art Bot: Build a Wobbly Robot That Creates Art Balloon-Powered Car Challenge Build a Gumdrop Geodesic Dome Milk Does Your Body and a Boat Good—Design Your… Read more
Center of a Shape Science
Blog Post
In this family STEM activity, students experiment with a simple technique that can help them determine the center of a shape. Grab some paperclips and string to explore! In this week's family science activity, students learn how to find the "middle" or "center" of a two-dimensional shape. It can be easy to locate the center of a symmetrical shape like a circle or a square, but finding the middle of an irregular shape can seem tricky. With a bit of science, kids can pinpoint the center of any… Read more
Cha-cha-cha by Latitude
Science Fair Project Idea
Scientific Method
You probably know that where you live on Earth affects your weather. If you live in a far northern or far southern latitude, you experience colder temperatures than people who live near the equator at latitudes close to zero. Your latitude on Earth affects many aspects of your culture, like how you dress, what kind of house you live in, what foods you eat, and even how your day is structured: what time you go to school, to dinner, and to sleep. Some cities at latitudes closer to the equator,… Read more
Chain Reaction: Inversion and the Pappus Chain Theorem
Science Fair Project Idea
Scientific Method
Here is a challenging problem for anyone with an interest in geometry. This project requires background research to solve it, but it is an excellent illustration of visual thinking in mathematics. Figure 1 below shows a series of circles (iC₁, iC₂, iC₃, ..., iC₃₀), inscribed inside an arbelos. What is an arbelos? The arbelos is the white region in the figure, bounded by three semicircles. The diameters of the three semicircles are all on the same line segment, AC,… Read more
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