The Viafocus library
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Beginner
TechnologyGrades 4, 5, 6
One Disc Lied — How do computers find a mistake in a message?
15 questions · 12 min
VViafocus4.0
Beginner
HistoryGrades 4, 5, 6
The Ring of Names — How did we learn to read Egyptian hieroglyphs?
26 questions · 14 min
VViafocus3.0
Beginner
ScienceGrades 3, 4, 5, 6
Uphill Water — How does a canal lock work, and how does a boat go up a hill?
13 questions · 10 min
VViafocus
Intermediate
MathematicsGrades 6, 7
Frostvakten — hur räknar man med negativa tal på tallinjen?
27 questions · 15 min
VViafocus
Intermediate
OtherGrades 8, 9
The Receipt That Won't Stop — How does compound interest work, and what does spending really cost you?
32 questions · 14 min
VViafocus
Intermediate
TechnologyGrades 7, 8, 9
Where the Four Hours Went — How social media keeps you scrolling (and who gets paid)
31 questions · 14 min
VViafocus
Beginner
HistoryGrades 4, 5, 6
Tjugo kilo pengar — Vad är pengar egentligen, och vad är inflation?
27 questions · 14 min
VViafocus
Intermediate
MathematicsGrades 7, 8
Prov: Rymdbasen Selene 4
36 questions · 50 min
VViafocus
Intermediate
MathematicsGrades 4, 5, 6
Grandpa Never Loses — How to always win the 21 matchstick game (Nim)
22 questions · 15 min
VViafocus
Beginner
MathematicsGrades 4, 5, 6
The Short Order — Why does serving the quickest first make everyone wait less?
26 questions · 15 min
VViafocus4.0
Beginner
ScienceGrades 4, 5, 6
The Wait — How does radar work, and how does it find a plane nobody can see?
29 questions · 16 min
VViafocus
Intermediate
ScienceGrades 5, 6, 7
Four Marks — How do you survive lost in the wild, and what kills you first?
30 questions · 16 min
VViafocus