101 Cheap and Easy Science Projects—your go-to guide for fun, educational experiments that won’t cost you an arm and a leg. Whether you’re a student, parent, or teacher, this collection is packed with hands-on science activities that are simple to set up, budget-friendly, and designed to spark curiosity.
Many of these projects use everyday items you likely already have around the house, making it easier than ever to dive into the wonders of science without a trip to the store. Get ready to learn, explore, and experiment—without breaking the bank!
Sun Tracker: DIY Solar Oven S’more
Age range: 8–14Time: 30 minutes setup + 15–45 minutes cooking (sunny day)Concepts: solar energy, heat transfer, greenhouse effect Goal Concentrate sunlight to melt chocolate and marshmallow for a mini s’more. Materials Clean pizza
Evaporation Olympics: Which Liquid Disappears Fastest?
Evaporation Olympics: Which Liquid Disappears Fastest? Age range: 7–13Time: 30–60 minutes (plus drying)Concepts: evaporation, surface area, volatility, temperature Goal Compare evaporation rates of safe household liquids and surfaces. Materials Water, vinegar, and isopropyl
Paper Bridge Strength Challenge
Age range: 6–12Time: 20–40 minutesConcepts: forces, compression/tension, engineering design Goal Discover how folding and shaping paper changes its load-bearing strength. Materials 10–15 sheets of plain printer paper 2 equal-height stacks of books (supports)
Paper Bridge Strength Challenge
Paper Bridge Strength Challenge Age range: 6–12 Time: 20–40 minutes Concepts: forces, compression/tension, engineering design Goal Discover how folding and shaping paper changes its load-bearing strength. Materials 10–15 sheets of plain printer paper
DNA Extraction from Strawberries
DNA Extraction from Strawberries Materials: Fresh strawberries Ziplock bag Dish soap Salt Water Rubbing alcohol (chilled) Coffee filter or cheesecloth Clear glass Goal / What They Will Learn: Understand basic DNA structure and
☁️Shaving Cream Rain Clouds
🧪 Materials: Clear glass or plastic cup Water Shaving cream Blue food coloring Dropper or spoon 👩🔬 Instructions: Fill the cup ¾ full with water. Spray a “cloud” of shaving cream on top.
🥚 Bouncy Egg Experiment
🧪 Materials: 1 raw egg 1 glass or jar Vinegar 👩🔬 Instructions: Place the egg in the jar and cover it with vinegar. Let it sit for 2 days. (Watch bubbles form!) Carefully
🌈 Rainbow Walking Water
🧪 Materials: 6 clear cups or jars Paper towels (cut into strips) Water Red, yellow, and blue food coloring 👩🔬 Instructions: Line up the 6 cups in a circle or straight line. Fill
Bottle Barometer: Forecasting with Air Pressure
Age range: 7–13Time: 30 minutes setup + 2–3 days observationConcepts: air pressure, weather, fluids Goal Build a simple barometer to see pressure rise and fall with changing weather. Materials Glass jar (wide mouth)
Homemade Rainbow
Homemade Rainbow Objective: Understand how light bends and splits into colors (refraction). Materials: A glass of water A flashlight or smartphone flashlight A small mirror A white piece of paper Steps: Set Up
Talking to Plants
Talking to Plants Research shows that many people talk to their plants while watering them. These individuals believe that doing this can help plants grow. Even if there is no scientific proof that
Making a Rainbow Celery
Making a Rainbow Celery Capillarity is the depression or rise of any type of liquid through a small passageway. These narrow pathways may be fibers or tubes. Capillarity is not confined to a