Fourth Grade Science Experiments (Page 12)

Science Fair Project Idea

Scientific Method

Imagine how cool it would be to build a robot hand that could grasp a ball or pick up a toy. In this robotics engineering project, you will learn how to use drinking straws, sewing thread, and a little glue to make a remarkably lifelike and useful robot hand. What will you design your robot hand to do? Pick up a can? Move around a ping pong ball? It is up to you! With these starting instructions, you can design any type of hand. You will simulate human finger anatomy as the basis for a… Read more

Making Homemade Bath Bombs

STEM Activity

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Have you ever had a refreshing bath using a bath bomb? It can be quite the relaxing experience, especially if your bath bomb has a nice fragrance or includes some bath salts. Have you ever wondered what causes a bath bomb to become so fizzy when it touches the water in the bathtub? It is due to a chemical reaction taking place between different ingredients within the bath bomb. In this activity, you will get to make your own homemade bath bombs and explore how changing the amounts of the… Read more

Marble Roller Coaster: How Much Height to Loop the Loop?

Science Fair Project Idea

Scientific Method

This is a really fun project even if you don't like going on roller coasters yourself. You'll build a roller coaster track for marbles using foam pipe insulation and masking tape, and see how much of an initial drop is required to get the marble to "loop the loop." It's a great way to learn about how stored energy (potential energy) is converted into the energy of motion (kinetic energy). Read more

Teach About Simple Machines

Blog Post

Use these free STEM lessons, projects, and activities to teach about simple machines with hands-on science experiments to investigate how levers, pulleys, ramps, screws, and wheel and axle systems offer mechanical advantages that make it easier to perform tasks. What Are Simple Machines? A simple machine is a machine with few or no moving parts that makes it easier to perform a certain type of work. Simple machines do not create energy, which must be… Read more

Teach Newton's Laws of Motion

Blog Post

Use these free STEM lessons and activities to teach about Newton's laws of motion. Newton's Laws of Motion in the K-12 Classroom Across all grade bands, students explore science related to forces, motion, and interactions between objects; concepts that use Newton's laws of motion as a fulcrum for understanding forces and motion; inertia and equilibrium; the relationship between mass and acceleration; the difference between acceleration and velocity;… Read more

Teaching Machines to Understand Sign Language

Science Fair Project Idea

Engineering Design Process

Can AI understand human language? In the future, AI could aid in emergency interpretive service in the hospital when translators aren't available. But can current AI algorithms understand non-verbal languages like sign language? In this science project, you will test whether AI can learn sign language gestures or phrases to see if it can be used for interpretation. Read more

9 STEM Activities to Teach about States of Matter

Blog Post

Use these free hands-on STEM activities help teach students about states of matter. Free STEM Activities to Teach about States of Matter The following hands-on science activities from Science Buddies' library of STEM Activities for Kids can be used with students in or out of the classroom to explore states of matter science: Colorful Patterns in Melting Ice: colorful science activity helps students visualize and explore changes from solid to liquid.… Read more

Build a Remotely Operated Vehicle (ROV) for Underwater Exploration

Science Fair Project Idea

Engineering Design Process

Have you ever wanted to explore cold or murky water? What about places where it could be dangerous or difficult for humans to swim? Remotely operated vehicles (ROVs) allow humans to take pictures, videos, and scientific samples of underwater life and habitats while safely operating the vehicle from a boat or from shore. In this project you will design and build your own small ROV that you can test in a bathtub, pool, or nearby body of water. Read more

Build a Rubber Band Paddle Boat

STEM Activity

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Build your own bathtub or pool toy from simple craft materials in this fun activity! You will build a rubber-band-powered boat that can zip across the surface of the water after you wind up the rubber band. Read more

Build a Simple Drone and Test How Much It Can Lift

Science Fair Project Idea

Scientific Method

How does weight affect a drone's speed? Is there a limit to how much weight a drone can lift? Find out with your own mini popsicle stick drone in this fun science project! Read more

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