Helen Pilcher 
The Pocket Book of Garden Experiments [PDF ebook] 

A beautifully designed activity book filled with fascinating garden experiments
With 80 experiments for the whole family to discover and enjoy,
The Pocket Book of Garden Experiments contains easy-to-follow instructions for activities that will stretch your imagination and bring out your inner scientist.
— Make an ecosystem in a jar
— Find out why leaves change colour
— Turn potatoes into slime
— Calculate the heights of trees
— Make a sound map of your garden
Each experiment takes inspiration from the natural world and the fascinating things that live in it.