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 rubbing alcohol (70%) 3 identical plates or shallow lids Small measuring spoon Timer Thermometer (optional) Fan (optional) Safety Use isopropyl alcohol in …
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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) Coins or small washers (weights) Ruler and pencil Tape (optional) Safety No special risks. Supervise younger kids around stacks of books so …
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 how it can be extracted using simple chemistry. Expected Outcome: White, stringy DNA will become visible in the alcohol layer, showing how …
🧪 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. Drop blue food coloring on top using a spoon or dropper. 👀 What to Look For: The food coloring will slowly “rain” …
🧪 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 remove the egg and rinse it with water. 👀 What to Look For: The eggshell will dissolve, and the egg will become …
🧪 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 every other cup with water (cup 1, 3, and 5). Add a few drops of red to cup 1, yellow to cup …
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 the Glass: Fill the glass with water. Place the small mirror inside the glass at an angle. Create Light: Shine the flashlight …
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 this is true, there is proof that some plants can communicate with each other with chemical signals. Vibrations can also travel in …
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 vertical path. One example is when water gets into the towel fibers. It does so no matter what the towel’s position is. …
Knowing more about flowers will need a dissection experience. Like all living beings, flowers have internal structures that help them function. All you need to do is explore them. What you need: Flowers from the yard or discarded flowers at the local flower shop A sharp knife or scalpel Magnifying glass How you do …
