"A Complex World Explained
Modern humans relate to our planet and to one another in ways that may seem simple on the surface, but when examined carefully, can be mind-bogglingly complex. Turn on a light switch, place a phone call, eat a meal and you tap into a vast network of actions and consequences that connect us to the Earth and to other humans in ways both beneficial and detrimental.
EarthPulse explores these global connections with vivid and informative imagery, maps, diagrams, and interactives that illuminate where we are today, how we got here, and how our actions may affect the future of life on Earth."
"Our most popular audio stories are now in one place. Listen to the stories and then use the questions that follow as prompts for story time and listening comprehension. You'll find a mixture of stories, fables, non-fiction and poetry."
The concept is simple. A foldable number chart is a strip of paper, with blank squares for digits, and next to them, words indicating the value of the digits. The strip can be folded to hide the words. So, for example,
7 hundreds 2 tens 4 ones