ThinkPeak
C1 · Necessary & sufficient

Friday 23 October 2026

Q1 · Base CampQ2 · Climb
A4 · print or use on screen · Mostly English. The cover and parent notes include Chinese.

Your practice is on its way.

We’ve just launched, and the families who join now shape what we build next. Add us on WeChat and we’ll bring you into the group, where each day’s practice arrives first. Tell us what works and where your child gets stuck. We read every message.

WeChat ID: SmartAddy2233

2026-10-23 cover
2026-10-23 Q1
2026-10-23 Q2
2026-10-23 Q1 · 1/2
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2026-10-23 Q2 · 1/2
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For parents · The rule

Write the sentence in the box as A → B. It means exactly the same as not B → not A — two ways of saying one rule, and both are safe to use.