Third Grade Science Experiments (Page 76)

Science Fair Project Idea

Scientific Method

Have you ever wished you could fly to space? Space flight is getting more accessible thanks to reusable rockets that make getting to space much cheaper. Civilian astronauts can even buy tickets for a few minutes in space! But exactly how high is "space"? How do engineers predict how high a rocket will go and figure out how to make it land safely? Find out in this project as you explore the physics of suborbital space flight. Read more

A Solar-Powered Robot Bug

Science Fair Project Idea

Scientific Method

"How do you frighten a grasshopper? And what does that have to do with light?" These are a couple of questions you're probably asking yourself after reading the title. Well, The Frightened Grasshopper Solar-Powered Bug is actually a toy grasshopper that vibrates when it is placed in sunlight or near a lightbulb. It stores up the energy from light, and converts it into motion. You will use this fun toy to explore how the brightness of the light affects the motion of the solar-powered insect. Read more

A Toxic Test: Can Plants Be Genetically Resistant to Heavy Metals?

Science Fair Project Idea

Scientific Method

Have you ever wondered why a plant that grows well in one environment may not survive in a different environment? For example, plants that grow well in a wet jungle would probably not do so well in a dry desert, lacking enough water. This is because plants have adapted to their specific environment. Some plants have even adapted to tolerate chemicals that would usually be toxic, such as various heavy metals. In this plant biology science project, you will investigate whether different varieties… Read more

Are More Expensive Golf Balls Worth It?

Science Fair Project Idea

Scientific Method

There is a bewildering selection of different golf balls to choose from for playing the game. Some less expensive, some more expensive, all with different claims for the advantages they will bring to your game. This project can help you determine which type of golf ball is right for you. Read more

Balloon Magic with Bernoulli's Principle

STEM Activity

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Have you ever seen pictures or videos of a roof being blown off a house during a hurricane or tornado? You might be surprised to hear that the roof is actually not pushed off by the strong winds but instead by the air inside the house! This can be explained by Bernoulli's principle, which states that fast-moving fluids or air, such as strong winds, have lower pressure than slow-moving air. In this activity you will demonstrate how balloons can be moved in a similar way. It is not quite as… Read more

Balloon Morphing: How Gases Contract and Expand

Science Fair Project Idea

Scientific Method

Expanding gases are everywhere, from the kitchen to the cosmos. You've tasted their pleasures every time you've eaten a slice of bread, bitten into a cookie, or sipped a glass of soda. In this chemistry science fair project, you'll capture a gas in a stretchy container you're probably pretty familiar with—a balloon. This will allow you to observe the gas expansion and contraction as the temperature changes. Read more

Bioinformatics - The Perfect Marriage of Computer Science & Medicine

Science Fair Project Idea

Scientific Method

Find out the real explanation for why your parents are so weird! Here is a science project that lets you explore the internet to find out why your "DNA blueprint" is so important to health and disease. In this science project, you will use methods that bioinformatics and biotech scientists perform on a daily basis to decipher the human genome in their efforts to diagnose and treat genetic diseases. Read more

Boyle's Law: Pressure vs. Volume of a Gas at Constant Temperature

Science Fair Project Idea

Scientific Method

This is a modern version of a classic experiment by Robert Boyle on the compressibility of gases. Boyle discovered the relationship between pressure and volume of gases that now bears his name. This project shows you a simple method for re-creating this famous experiment. Read more

Bringing Science Magic to the Classroom

Blog Post

A magic milk rainbow may be all about what's happening at the surface level between milk and soap, but when kids create the magic, the learning excitement is palpable. For Lily Arendt, hands-on science activities are a great way to help kids uncover the magic of science. We couldn't agree more! Above: Lily Arendt and a class of students explore surface tension with the Make a Milk Rainbow science activity. For Lily Arendt, a biology student at DePaul University in Chicago and a… Read more

Build a Bird Nest

STEM Activity

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Different types of birds lay their eggs in different places. Some build tiny nests in bushes, some build enormous nests in tall trees. Some lay their eggs directly on the ground or on rocky ledges. Those that build nests use many different types of materials. In this project you will try to build your own bird nest using only natural materials that you can find outside. Can you do better than a bird? Read more

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