One big question per lesson
Each lesson is a pop-up storybook that walks through the seven Yufena steps: Ask, Guess, Find out, Check, Chain, Try it and Teach back. Read it together in about 15–20 minutes.
All lessons
Haze
Why can't the wind blow the haze away?
Explore the Sumatra haze: dry-season fires, the monsoon wind and a warm-air lid. Includes a tea-and-plate experiment and a printable Explorer page.
About 15–20 minutes · Ages 7–9
Start the lesson →Monsoon Rain
Where does all the monsoon rain come from?
Follow water from warm seas into giant clouds, and find out why the rain arrives in seasons.
Start the lesson →Volcano
What makes a volcano erupt?
Peek inside the Earth and find out why Indonesia has so many volcanoes.
Start the lesson →Why does a ball curve?
How can a kick bend in the air?
Spin, air and a swerving shot. Discover the hidden push that bends a ball's path.
Start the lesson →Made to be read side by side
- A “Parent note” on every page tells you what to ask.
- Your child types a guess, checks it, and builds a cause-and-effect chain.
- A small, safe experiment with things you already have.
- A printable Explorer page at the end to keep or share.
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