Elmer Richard Churchill Poradie kníh (chronologicky)

Illustrated by Frances Zweifel

With '730 Easy Science experiments' you can discover the answers to hundreds of questions right at homes, using ordinary materials like lemons, drinking straws, old newspapers, milk cartons and pieces of string. Detailed instructions guide you through each experiment step-by-step and special notes outline whether you need a lab partner or an adult to help out, and most importantly how and why the experiments work.