Architects Brian and Jess team up with kids to find the “heart of the city,” the center that cities grow around. Visit the streets of old Detroit to learn how cities change over time, and use maps and landmarks to find the heart of your city.
Move on a physical place value chart to help understand that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right.
Move on a physical place value chart to understand the "times 10" pattern.
Ecuador is the first country in the world to enshrine the “rights of nature” in its constitution—to establish that species other than humans have their own legal right to exist. And now this revolutionary concept is being put to the test.