Science

We are living through the most prosperous age in all of human history, yet we are listless, divided, and miserable. Wealth and comfort are unparalleled, but our political landscape is unmoored, and rates of suicide, lone­liness, and chronic illness continue to skyrocket. How do we explain the gap between these truths? And how should we respond?

For evolutionary biologists Heather Heying and Bret Weinstein, the cause of our troubles is clear: the accelerat­ing rate of change in the modern world has outstripped the capacity of our brains and bodies to adapt. We evolved to live in clans, but today many people don't even know their neighbors' names. In our haste to discard outdated gender roles, we increasingly deny the flesh-and-blood realities of sex--and its ancient roots. The cognitive dissonance spawned by trying to live in a society we are not built for is killing us.

In this book, Heying and Weinstein draw on decades of their work teaching in college classrooms and explor­ing Earth's most biodiverse ecosystems to confront today's pressing social ills--from widespread sleep deprivation and dangerous diets to damaging parenting styles and back­ward education practices. Asking the questions many mod­ern people are afraid to ask, A Hunter-Gatherer's Guide to the 21st Century outlines a science-based worldview that will empower you to live a better, wiser life.

Adding It Up explores how students in pre-K through 8th grade learn mathematics and recommends how teaching, curricula, and teacher education should change to improve mathematics learning during these critical years.

The committee identifies five interdependent components of mathematical proficiency and describes how students develop this proficiency. With examples and illustrations, the book presents a portrait of mathematics learning:

The committee discusses what is known from research about teaching for mathematics proficiency, focusing on the interactions between teachers and students around educational materials and how teachers develop proficiency in teaching mathematics.

Jax Bishop wonders how he'll ever finish his report on space that he left to the last minute. Now it's school break and the big soccer game is coming up. But when he turns on his laptop, Zaria from the planet Zix appears on his screen. She's made contact with Jax so she can interview an Earthling for her special Zorketh training. They decide to collaborate, and Zaria starts - by turning Jax's room into a black hole! Things get weirder when Ollie, Jax's big shaggy dog, starts to communicate with Zaria. And when Jax's best friend, Jefferson, bursts into Jax's room, things really get complicated. Can Jax keep everything under control - or is his own personal alien at risk of being discovered?

Note to Teachers, Parents, Grandparents, and Caregivers: An Alien Helped Me with My Homework! is for readers ages 8-12. It has black and white comic-style sketches at the beginning of each chapter and 35 high resolution images from NASA and other organizations. All of the science information has been fact checked by a senior astrophysicist. Each chapter ends with a simple simulation that the reader can try. Important words/concepts (e.g., the categories of black holes) are italicized in the text and defined in a glossary at the end of the book. Ideas to think about and interesting additional facts are provided in star-shaped inserts in the margins.