Chemistry & Materials
Red Cabbage pH Indicator: Comparing Food‑Based Liquids
Red cabbage juice turns different colours in acidic, neutral, and alkaline solutions, letting children compare the pH of common kitchen liquids and see how…
THE SCIENCE PROJECT LIBRARY
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Physics
Does Ramp Height Change How Far a Toy Car Travels? – An Easy Experiment
Explore how the height of a ramp influences the distance a toy car rolls. This beginner‑level experiment lets children measure, graph, and explain the…
Engineering
How to Record Observations Without Changing Your Results
Recording observations objectively means writing down exactly what you see and hear, without adding guesses or interpretations. This guide shows parents, teachers, and homeschool…
Plants & Living Things
Does Mulch Reduce Water Loss from Soil? – A Simple Experiment for Kids
This hands‑on experiment lets children compare soil moisture under mulched and un‑mulched containers, showing how mulch can cut evaporative water loss.
Chemistry & Materials
How Does Salt Concentration Affect Ice Melting? – An Experiment for Kids
This experiment lets children discover how different amounts of salt change the speed at which ice melts, demonstrating the science of freezing‑point depression with…
Earth & Weather
How Does Slope Affect Water Runoff? A Simple Home Experiment
Steeper slopes cause rain to run off faster and in larger amounts. By building tilted trays and measuring the water that drains away, families…
Physics
How Many Trials Should a School Science Project Include? – A Hands‑On Experiment
The ideal number of trials depends on the goal, but three to five repeats are a solid starting point for most elementary projects; more…
Plants & Living Things
How Does Water Amount Affect Radish Seedling Growth?
This experiment lets children discover how different amounts of water change the speed and size of radish seedlings. By watering identical seeds with low,…
Engineering
Can You Improve a Marble Run by Changing One Section at a Time?
Learn how to turn a simple marble run into a step‑by‑step engineering challenge. By altering one section, testing the effect, and recording the results,…