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Fourth Grade Project Ideas (247 results)

Science Buddies' fourth grade science projects are the perfect way for fourth grade students to have fun exploring science, technology, engineering, and math (STEM). Our fourth grade projects are written and tested by scientists and are specifically created for use by students in the fourth grade. Students can choose to follow the science experiment as written or put their own spin on the project.

For a personalized list of science projects, fourth graders can use the Science Buddies Topic Selection Wizard. The wizard asks students to respond to a series of simple statements and then uses their answers to recommend age-appropriate projects that fit their interests.

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Science Fair Project Idea
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
CompSci_p017
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Do you like to look up into the night sky? There are so many stars, it can be mind boggling! Some ancient people marked time by the changes in star patterns. We still use changes in constellation patterns to mark astronomical time. Do constellations change more in one hour, one day, one month, or one year? Read more
Astro_p007
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No hazards
Science Fair Project Idea
You have probably seen it on You Tube™ — the exploding Coke® and Mentos® experiment. But what is it that makes the reaction happen, and what factors cause a larger or smaller eruption? In this science project, you will see if using crushed Mentos candies, instead of whole Mentos candies, will affect the reaction. Read more
MatlSci_p023
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety An adult may be needed to help crush the Mentos candies. Wear safety goggles when testing the explosions so you will not get sprayed in the eye!
Science Fair Project Idea
You've probably heard of hand prints and fingerprints, but what about sun prints? To make a sun print, place an interesting object on a special sheet of sun print paper, expose it to the sun for a few minutes, immerse the paper in water, and watch as a permanent image appears! Sun print paper can be used to make beautiful and eerie prints, using just sunlight and water. Sunlight is actually a mixture of different colors of light. In this chemistry science fair project, you will test which… Read more
Chem_p084
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
What is the highest note you can sing? How about the lowest? Do you think males and females can reach the same notes? How about children and adults? Find out the answers to all these questions in this "note"-worthy science fair project! Read more
Music_p027
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- Less Details
Time Required Short (2-5 days)
Prerequisites To do this science fair project, you will need to know which key is Middle C on your piano or keyboard, have a friend or family member show you which key is Middle C, or use a piano that has Middle C labeled. See the Experimental Procedure tab for more details.
Material Availability This science fair project requires access to a piano, keyboard, or virtual piano (available online). See the Materials tab for details.
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Crystals come in all different shapes and sizes. However, the purest and cleanest crystals are usually also the ones that grow to be the largest in size. In this science fair project, you will compare the size and shape of crystals grown in three different temperature conditions: room temperature, in the refrigerator, and in an ice bath. With just water and borax, a household cleaning product, you can discover the best recrystallization method for growing large, pure crystals. Read more
Chem_p082
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision required when handling boiling water and borax. Borax is harmful if swallowed, inhaled, or contacts eyes. On rare occasion touching borax can result in rashes
Science Fair Project Idea
Animals have different levels of activity depending upon their habitat, metabolism and behavior. Diurnal animals are more active during the day. Nocturnal animals are more active at night. Being diurnal or nocturnal may have different advantages for different animals. For example, desert animals tend to be nocturnal so they can stay cool and escape the desert heat present during the day. What types of diurnal and nocturnal animals are common in your area? You can set out a small trap to… Read more
Zoo_p041
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety If you choose to try trapping small animals, adult assistance will be necessary. Avoid touching wild animals. Seek immediate medical attention if bitten by an animal.
Science Fair Project Idea
For centuries, beautiful bell towers, like the Leaning Tower of Pisa, have been the center of village life, announcing the time of day, the joy of weddings, and the sorrow of funerals. They were also used to call villagers to action in times of danger. Have you ever wondered, though, why people put the bells in towers? The bells are so heavy, why haul them all the way up to the top of tall towers? Why not just ring them on the ground? Putting bells up high does make for a dramatic visual… Read more
Music_p019
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- Less Details
Time Required Short (2-5 days)
Prerequisites Access to a multi-level home or building with windows on the ground and upper floors, and without external sources of noise, like traffic.
Material Availability Readily available
Cost Low ($20 - $50)
Safety You should never lean out of a window and should have an adult with you if you need to try this science fair project away from home. Adult supervision is recommended.
Science Fair Project Idea
Comets—big lumps of rock, ice, and frozen gases that orbit the Sun—are among the most amazing heavenly objects seen in the night sky. The glowing tail behind the comet's nucleus inspires wonder. But did you know that a comet's tail is evidence that it's melting? As a comet passes by the Sun on its orbital path, it starts to melt. But do bigger comets melt faster than smaller comets? In this astronomy science project, you will investigate how the size of the comet affects the… Read more
Astro_p035
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety Always exercise caution when using electrical equipment. Adult supervision is recommended.
Science Fair Project Idea
It's true that the light from the Sun provides the heat and light we need to survive here on Earth, but it also poses a threat. Ultraviolet (UV) rays in sunlight cause damage that can lead to early skin aging and even skin cancer. In this science fair project, find out when you need the most protection from UV rays by using a personal UV monitor to measure how the level of ultraviolet light changes during different parts of the day. Read more
HumBio_p028
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability You will need to order a personal UV monitor online. Please see the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Do not look at the Sun when you are measuring the UV level. Wear sunscreen when you are in the sunlight.
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