Third Grade Science Experiments (Page 186)

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

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

Clean Water and Aquifer Science

Blog Post

Is rainwater that seeps into the ground and passes through layers of soil clean or dirty? In this week's family science spotlight, kids explore how the passage of water through underground layers can result in storages of groundwater that are surprisingly clean! Above: students can explore aquifers and filtration with simulated "dirty water" and model collection bins. Natural Water Filtering In this week's family-friendly science activity, students experiment to see how the process of… Read more

Clever Contraptions (Awesome Summer Science Experiments)

Blog Post

Check in each week at Science Buddies this summer for our Awesome Summer Science Experiments series! Each week, we'll highlight a few activities for awesome science and engineering kids can do at home. We've got a whole summer of fun STEM themes lined up for kids of all ages — for free. This week: awesome summer science experiments for crazy, clever contraptions kids can build and put to use. Awesome Clever Contraptions The activities in Week… Read more

Cold or Warm, Can We Really Tell?

STEM Activity

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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

Collide Head On with this Toy

STEM Activity

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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

Colorful Candy Science

Blog Post

Too much candy after Halloween? Put some of your trick-or-treat candy to scientific use with a hands-on project. This crowd-pleasing STEM activity turns colorful candies into a visual treat for students and a lesson in molecular diffusion. Candy Science: Just Add Water! Hands-on K-12 STEM. www.sciencebuddies.org Simple Candy STEM All you need to do this science activity is colorful candies, a small bowl (or plate), and water. Line the candies up in a… Read more

Colorful Walking Water Science Activity

Blog Post

This simple STEM activity turns capillary action and "siphoning" into an exciting rainbow-colored demonstration! Try this colorful "Walking Water" science activity How can you move water from one cup to another without pouring it? A simple hands-on experiment with a series of clear cups and paper towels lets students explore this question. When they see water move up and then down the paper towels, there will be plenty of opportunity for… Read more

Come One, Come All! Explore the Effect of Light on the Speed of the Amazing Rotating Radiometer!

Science Fair Project Idea

Scientific Method

Radiometers are fun-to-watch novelty items, but they also have a distinguished scientific history, having been studied by James Clerk Maxwell and Albert Einstein. A radiometer has a set of four vanes (like small sails) connected to a spindle that is free to rotate. When the radiometer is placed in bright light, the vanes and spindle start to spin. It looks like a magic trick, but there is a scientific explanation for this weird behavior. In this science fair project, you will experiment with… Read more

Comparing Cranberry Condiments

STEM Activity

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Does your family have jellied cranberry sauce with Thanksgiving dinner? Jellied cranberries are thick and retain the shape of the mold in which they are placed, which might mean a turkey-shaped mold or even the shape of the can if you use a canned version. Taking a bite of jiggly jellied cranberries can be a fun addition to a delicious meal, but cranberries can also be served as a liquid-like sauce. Both versions use the same ingredients, so what makes one turn into a gelatin while the other… Read more

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