What grows by the window
Main question: what does a seed need to sprout? Compare seeds in light and in shade, on a damp and a dry paper towel, and draw what has changed.
An independent reference of home experiments for schoolchildren. It is not a school or educational institution and is not connected with the former website on this domain; every experiment is done only together with an adult.
Topics
The same phenomenon can be explored at age seven and at age fifteen — only the questions and the way you record them change. A younger child just needs to notice and draw; an older pupil will enjoy measuring, repeating and comparing. Below, the topics are split into two levels so it's easier for an adult to pick a suitable one.
A topic is good not because it's difficult, but because you want to keep coming back to it and asking new questions.
How this section works: for each topic we suggest a main question, hint at what you can observe at home and point you to the right section of the site. School years are approximate — go by the child's interest and independence rather than their age.
Topics where the main thing is to see, describe in words and draw.
Main question: what does a seed need to sprout? Compare seeds in light and in shade, on a damp and a dry paper towel, and draw what has changed.
Liquid, solid, melting. Watch water freeze in a plastic cup and melt on a plate, and learn to keep track of time.
Catch a rainbow with a glass of water, trace shadows and mix food colouring in water to make new colours.
Topics where you can measure, repeat an experiment several times and build simple tables and graphs.
Find levers at home — scissors, a door handle, salad tongs — and use a ruler to test how the length of the arm affects the effort needed.
Baking soda and vinegar, starch and iodine. Learn to describe the signs of a reaction — gas, a change of colour — and to record the conditions so that someone else could repeat the experiment.
A two-week diary of a plant or of the weather outside the window. Learn to make notes at the same time each day, compare days and draw careful conclusions.
This catalogue will publish standalone articles about home experiments and observations. Our editors write them in English specifically for this version of the site; they are not translated from other languages.
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Short observation lessons by topic: what exactly we see in each experiment and why it happens.
Week-long observation tasks: a plant by the window, water in the freezer and testing your own hypothesis.
What to keep at home for experiments, what never to use and how to set up a safe workspace.
The experiments are described in general terms, based on school science textbooks, guides for young researchers and safety rules. Results at home may differ from what you expect, so repeat each experiment together with an adult and write down honestly what you actually saw.