Bend water with a comb · Make things float · The science of electrons · Grades 2–6
Everything is made of tiny atoms. Atoms have electrons (negative charge) and protons (positive charge). Normally they're balanced — neutral.
When you rub certain objects together (like a balloon on hair), electrons transfer from one object to another. The object that gains electrons becomes negatively charged, and the one that loses them becomes positively charged.
This free interactive science experiment guide helps students learn scientific concepts through hands-on investigation. Science experiments teach the scientific method: asking questions, forming hypotheses, testing through experimentation, and analyzing results. These critical thinking skills apply to every area of learning.
Each experiment uses common household materials and includes step-by-step instructions, safety tips, and explanations of the science behind what you observe. Interactive elements let you explore the concepts virtually before or after doing the physical experiment.
Read through the experiment steps, then try the interactive simulation. For hands-on learning, gather the materials listed and follow the instructions with an adult. Record your observations and compare them to the scientific explanation.
Last reviewed: April 2026