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Personal science learning · Ages 13+
Learn science by explaining it.
Why does ice melt on a warm plate? Explore a clue, explain your idea in your own words, then try it in a new situation. English science practice for ages 13 and up.
Download for iPhone in Singapore and Hong Kong. Start with 12 free lessons.
Free: 12 lessons
Free: up to 2 completions daily
Plus: all 120 current lessons
Plus: up to 6 completions daily
Clear choices for your learning
More science as it grows
Plus includes all 120 current lessons and new Plus lessons released while your subscription is active.
Explain it. Think it through with Nova.
AI answer coaching is part of the registered learning service. Review and explicitly agree to the current AI account notice before account setup or continued learning. When the service is enabled and current permission, Plus access and all server checks pass, only an answer you intentionally submit and lesson context travel through our United States backend to BytePlus ModelArk. Its published processing locations include Malaysia, Indonesia and the EU/EEA. Safety-flagged content may be retained for up to 180 days in Malaysia. Agreement does not send an answer or enable a disabled server. Withdrawal pauses registered learning, while privacy, data export, account deletion and sign-out remain accessible.
Written-answer AI: enabled for supported account regions with current permission, Plus access and all server checks. Check current account eligibility in the app; App Store availability alone does not enable AI.
REMINDERS
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INFORMATION