STEM Activity
Do you filter your tap water before drinking? Maybe at home you have a water filter on your faucet, in the fridge, or use special pitchers that have a filter unit in them. You have probably heard in commercials that these filters are supposed to make your water cleaner and safer to drink. But have you ever wondered what, exactly, these filters are doing and if the water is really cleaner in the end? Find out about the cleaning power of water filters in this activity; but for results you can… Read more
STEM Activity
Halloween is almost here and behind every corner there seems to lurk a spooky shadow! Luckily, this is all they really are—just shadows that are part of scary decorations set up to give you a thrill while trick-or-treating. But where do these shadows come from, and how can some of them be so huge? Do this activity and find out how to generate the scariest and largest shadow of all! Read more
STEM Activity
Have you ever wondered why your phone, computer, or a flashlight works without being plugged into a power outlet? Where does the electrical energy come from that makes all these portable devices function? You probably know the answer: they use batteries! But do you know how these batteries work? Batteries store electrical energy in the form of chemical energy, which means that electrochemical reactions inside the batteries create electricity. It may sound complicated, but it is simpler than you… Read more
STEM Activity
Do you love bright and vibrant colored art supplies? Do you ever wonder how these colors are made?  The variety of colors comes from colored molecules that are mixed into the material used to make the product. Some colored molecules are synthetic (or manmade), like the famous Yellow #5 found in food dyes. Others are extracted from natural sources, such as carotenoid (pronounced kuh-RAH-tuh-noid) molecules, which make your carrot look orange, and can be extracted from saffron.  Even… Read more
STEM Activity
Mathematicians look at the world around them in terms of numbers and formulas, and now, you can discover the formula for Pi too! In this science activity you will examine circular objects and see what you can discover about their sizes. As you explore, you might be surprised at how useful the results can be—maybe it will inspire you to save up for a bike with bigger wheels! Read more
STEM Activity
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Have you ever wondered why it is harder to keep your balance with a heavy backpack on? Or why it is difficult to make a toddler's sippy cup tip over? Maybe you are the kind of person who wonders about circus balancing acts and would like to learn how to ride a bike on a rope. Or perhaps you want to know how to make your toy car less prone to toppling over when racing through a sharp curve. In this science activity, you will get to investigate balance using marshmallows, skewers, and… Read more
STEM Activity
Have you ever tried to guess the temperature of the water in the pool? On a hot day, the water might feel chilly at first, but once you’re in, you don’t notice the temperature as much. On a cool day, though, the pool water that is the same temperature often feels quite comfortable. Is it all relative? Is our body equipped to tell absolute temperature? The question might make you curious about how our body collects information about our environment, processes it and forms our… Read more
STEM Activity
Did it ever occur to you that tennis, bowling, Newton’s cradle, and cars bumping into each other all revolve around collisions? It is fascinating how a few rules of physics can predict the outcome of these collisions. You can discover these rules yourself with a fun homemade toy. Do the activity, play with the toys you make and be one step closer to understanding what happens when you shoot a marble into another! Read more
STEM Activity
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Have you ever tried adding green food coloring to your milk? Or blue coloring to the butter you spread on your bread? You may not have tried this, but for years, scientists have studied the effect of color and food appearance on how food tastes. Believe it or not, our eyes are an important part of how we taste and perceive food! In this activity, you will learn about how you can trick your taste buds—with just a little food coloring! Read more
STEM Activity
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What if you could take a single liquid, and change it into a rainbow of colors without using food dye. You can! In this activity you will use red cabbage to make what is called an indicator solution. Indicator solutions can change colors depending on what you add to them. In this case adding something acidic (like lemon juice) will change it to one color while adding something basic (like bleach) will change it to another. Try and see how many colors you can make using different household… Read more
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Free science fair projects.