Fourth Grade Science Experiments (Page 124)

Make a Mood Tracker

Science Fair Project Idea

Engineering Design Process

How do you feel right now? Do you remember how you felt a few hours ago? How about yesterday or last Wednesday? What if you could track your emotions throughout the day and use this information to help improve your mood and well-being? In this science project, you will program a simple, pocket-sized device that you can carry around with you to log your feelings whenever you want or on a specific schedule. Read more

Make a Paper Fish Swim with Surface Tension

STEM Activity

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Have you ever wondered how water droplets form on a window on a rainy day, why some bugs can mysteriously walk on water, or why you use soap to wash your hands? All of these things are related to the phenomenon called surface tension. In this activity you will learn how you can use surface tension to make a fish cut from a piece of paper seemingly swim around on its own! Read more

Make an Adaptive Switch

Science Fair Project Idea

Engineering Design Process

How could you send a text message without using your thumbs? What about typing on a keyboard or using a video game controller without using your fingers? Due to a variety of medical conditions like cerebral palsy or paralysis from an accident, some people might be unable to easily use their hands and fingers to push small buttons or use joysticks. However, they might be able to use their entire hand to push a single larger button or use another part of their body like their foot or even their… Read more

Make Music with Singing Glasses

Blog Post

Explore the physics of sound as you make music using wine glasses in this family STEM activity. Have you ever run your finger along the top of a glass and heard a sound? In this week's family science activity, explore the science behind this process and find out how to use the science involved to make a range of sounds! What causes a sound to occur when you run your finger along the top of a wine glass? Experiment to find out how friction is involved and how varying the size,… Read more

Make Sharpie Tie-Dye Ornaments!

Blog Post

With a few simple materials on hand and Sharpie® markers, kids can turn scraps of fabric or plastic into works of art. Sharpie Tie-Dye is a great way to add colorful and creative STEM to the holidays and winter break. Creative Chemistry with Sharpie Tie-Dye: Hands-on STEM with Science Buddies. www.sciencebuddies.org Pairing science, technology, engineering, and math exploration with creative hands-on projects and activities is a great way to get… Read more

Make Your Own Electric Guitar Pickup

Science Fair Project Idea

Scientific Method

If you like playing electric guitar, this could be a cool project for you. Have you ever wondered how an electric guitar works? In this project you'll wind one or more of your own electric guitar pickups and test them out in an inexpensive electric guitar. How will the sound change with the number of turns you use in the coil? Or with the strength of the magnets you use? Read more

Make Your Own Psychrometer

Science Fair Project Idea

Scientific Method

From the name, you might guess that a psychrometer is an instrument designed to measure your thoughts. Psych! Actually, it is an instrument that can help you forecast the weather. Read more to find out how it works. Read more

Making It Shipshape: Hull Design and Hydrodynamics

Science Fair Project Idea

Scientific Method

Sailboats, tugboats, barges, ocean liners, submarines are all different boats with different shapes. How does the shape of a boat's hull affect how easily it moves through the water? This project shows you how you can investigate this question using a homemade water trough and model boat hulls. Read more

Making Math with Dough: Weekly Science Activity

Blog Post

In this week's spotlight: a math activity that turns playing with dough into an exploration of geometry. If you make a cube out of dough, you can measure the sides of the 3D object and multiple the length by width by height to find out the volume of the shape. If you gently and uniformly flatten (or squish) the object, you transform your original shape into a new shape with new dimensions. Does the volume change? In this family-friendly math activity, kids can have geometry fun with… Read more

May the Best Plant Win! Experiment with Genetically Modified Seeds

Science Fair Project Idea

Scientific Method

Farmers face a variety of challenges in their efforts to grow crops. One of the chief challenges is the presence of unwanted plants (weeds) that compete with the crop plants for water, nutrients, and light. If the weeds are not suppressed, they can reduce or completely eliminate the amount of food derived from the crop at harvest. In this biotechnology and plant science fair project, you will simulate the competition between crop plants and weeds, and determine whether the use of an herbicide,… Read more

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