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 box (or shoe box) Aluminum foil Plastic wrap or clear food bag Black paper Tape and scissors Stick to prop lid Graham …
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 …
Evaporation Olympics: Which Liquid Disappears Fastest?Read More »
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 …
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 2 equal-height stacks of books (supports) Coins or small washers (weights) Ruler and pencil Tape (optional) Safety No special risks. Supervise younger …
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 …
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) Balloon or plastic wrap Rubber band Tape Drinking straw Index card or paper for scale Marker Safety Use glass carefully; adults should …
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 …
