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.
Explore comparing fractions with like numerators or like denominators to tell which is larger or smaller using benchmark fractions and visual representations like number lines.
Explore comparing fractions with like numerators or like denominators.
In the middle of Rio de Janeiro sits the world’s largest urban rainforest: Tijuca National park. To combat a century of deforestation and hunting, a team of researchers are repairing the forest’s forgotten web of life, one species at a time.
In the middle of Rio de Janeiro sits the world’s largest urban rainforest: Tijuca National park. To combat a century of deforestation and hunting, a team of researchers are repairing the forest’s forgotten web of life, one species at a time.