The Viafocus library
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Frostvakten — hur räknar man med negativa tal på tallinjen?
27 questions · 15 min

The Ring of Names — How did we learn to read Egyptian hieroglyphs?
26 questions · 14 min

The Receipt That Won't Stop — How does compound interest work, and what does spending really cost you?
32 questions · 14 min

Where the Four Hours Went — How social media keeps you scrolling (and who gets paid)
31 questions · 14 min

Tjugo kilo pengar — Vad är pengar egentligen, och vad är inflation?
27 questions · 14 min

Prov: Rymdbasen Selene 4
36 questions · 50 min

Grandpa Never Loses — How to always win the 21 matchstick game (Nim)
22 questions · 15 min

The Short Order — Why does serving the quickest first make everyone wait less?
26 questions · 15 min

The Wait — How does radar work, and how does it find a plane nobody can see?
29 questions · 16 min

Four Marks — How do you survive lost in the wild, and what kills you first?
30 questions · 16 min

Three and a Bit — Why is pi 3.14, and what is pi actually measuring?
28 questions · 15 min

Wake the Needle — What is a magnet, and how does a compass work?
26 questions · 15 min