Cities and Statecraft in the Renaissance looks at the rise of trade, commerce, guilds, and the merchant and ruling classes in northern Europe. This influenced the growth of towns, cities, states, and regions, who competed with one another for power, artistic talent, and creativity. At the same time, people rich and poor were struggling to establish new forms of society and government.

As young readers journey into the natural world, they will discover that numbers, patterns, shapes -- and much more -- can be found by observing everyday plants and animals. What if animals and plants knew math, just like us? Would flowers bloom in patterns? Would raindrops fall in rhythm? Would birds balance evenly on branches?

In Sorting through Spring, the second title in the Math in Nature series, nature comes to life to help children grasp concepts of patterning, sorting, data management, and probability. This interactive, poetic, and artful picture book series is a...