Занимательная арифметика

Dlya tekh, kto boitsya formul i mudryenykh obyasneniy, no lyubit reshat vesyelye zadachki i khitrye golovolomki, razgadyvat zagadki i delat opyty, Izdatelstvo AST vypuskaet novuyu knizhnuyu seriyu Prostaya nauka dlya detey. Zdes legko, ponyatno i neveroyatno uvlekatelno rasskazyvaetsya o chudesakh v fizike, khimii, biologii i astronomii: o vechnykh dvigatelyakh i puteshestviyakh na Lunu, o kristallakh-khameleonakh, solnechnykh batareyakh, o tom, kak zhili dinozavry, pochemu voda v more solenaya, skolko sozvezdiy na nebe i o mnogom-mnogom drugom.Ostorozhno! Knigi zatyagivayut!