A large book of experiments and experiments for boys. Weitkene L.D.

A book in a hard cover. For the experiments described on its pages, you will need a variety of items that are likely to be found at home. After reading the theory, you can conduct many cognitive experiments. The publication not only describes in detail how all experiments are carried out, but their scientific explanations are also given. Carefully follow the step -by -step instructions, learning about the causes of various phenomena.

for secondary school age.