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សម្រស់ និង សុខុមាលភាព
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វប្បធម៌ និង ប្រវត្តិសាស្ត្រ
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ម្ហូប និង ភេសជ្ជៈ
វិស្វកម្មបញ្ច្រាស
វិទ្យាសាស្ត្រ
កីឡា
បច្ចេកវិទ្យា
ប្រដាប់ដែលស្លៀក
ប្លង់វិទ្យាសាស្ត្រ
វិទ្យាសាស្ត្រ
1,546 ប្លង់មាន • 11 ប្រភេទរង
រុករកប្រភេទរង
ប្លង់ (1,546)
Al-Khwarizmi's Algebra — Complete the Square with Paper Tiles
ដោយ Mark
មជ្ឈិមសតវត្ស
33
0
0
0
0
0
Fibonacci Numbers — Count the Spirals on a Pinecone
ដោយ Mark
មជ្ឈិមសតវត្ស
34
0
0
0
0
0
Perfect Numbers — Find the Numbers That Equal Their Own Parts
ដោយ Mark
បុរាណ
31
0
0
0
0
0
Heron's Square Roots — Fold a Rectangle Toward a Square
ដោយ Mark
បុរាណ
33
0
0
0
0
0
Euclid's Algorithm — Find the Biggest Shared Measure with Paper Strips
ដោយ Mark
បុរាណ
34
0
0
0
0
0
Sieve of Eratosthenes — Hunt Prime Numbers on a Grid
ដោយ Mark
បុរាណ
40
0
0
0
0
0
Building Leonardo da Vinci's Armored Car — The Ancestor of the Tank
ដោយ Emma
Renaissance (1400–1600)
42
0
0
0
0
0
Building Leonardo da Vinci's Ornithopter — The Flapping-Wing Flying Machine
ដោយ Emma
Renaissance (1400–1600)
72
0
0
0
0
0
Proving the Pythagorean Theorem by Cutting Squares — a² + b² = c²
ដោយ Mark
បុរាណ
51
0
0
0
0
0
Building Leonardo da Vinci's Revolving Bridge — The Swing Bridge for a Marching Army
ដោយ Emma
Renaissance (1400–1600)
49
0
0
0
0
0
Building Leonardo da Vinci's Self-Propelled Cart — The First Programmable Robot
ដោយ Emma
Renaissance (1400–1600)
43
0
0
0
0
0
Building Leonardo da Vinci's Aerial Screw — The Ancestor of the Helicopter
ដោយ Emma
Renaissance (1400–1600)
49
0
0
0
0
0
Measuring the Earth from a Single Mountain — Al-Biruni's Horizon-Dip Method
ដោយ Astro
មជ្ឈិមសតវត្ស
53
0
0
0
0
0
Measuring Pi — Archimedes' Method of Squeezing a Circle Between Polygons
ដោយ Mark
បុរាណ
42
0
0
0
0
0
The Law of the Lever — Archimedes' Balance of Weight and Distance
ដោយ Martin
បុរាណ
60
0
0
0
1
0
Testing a Gold Crown with Water — Archimedes' Buoyancy and the Eureka Method
ដោយ Penny
បុរាណ
52
0
0
0
0
0
Measuring How Far the Sun Is Compared to the Moon — Aristarchus' Half-Moon Method
ដោយ Astro
បុរាណ
58
0
0
0
0
0
Measuring the Height of a Pyramid by Its Shadow — Thales' Similar Triangles
ដោយ Mark
បុរាណ
90
0
0
0
0
0
Building Leonardo da Vinci's Parachute — The Sealed Linen Pyramid of 1485
ដោយ Emma
Renaissance (1400–1600)
38
0
0
0
0
0
Measuring the Circumference of the Earth — Eratosthenes' Shadow Method
ដោយ Astro
បុរាណ
41
0
0
0
0
0
Making a Coiled-Straw Bee Skep — The Traditional Beehive Before Wooden Boxes
ដោយ Karen
មជ្ឈិមសតវត្ស
60
0
0
0
1
0
Pasteurising Milk and Wine — Gentle Heat That Kills the Germs Without Cooking
ដោយ Galadriel
សម័យទំនើប
44
0
0
0
0
0
Casting Reinforced Concrete — Marrying Steel and Stone into the Modern Structure
ដោយ Balin
សម័យទំនើប
49
0
0
0
0
0
Building a Safety Bicycle — Chain Drive, Equal Wheels, and Personal Freedom
ដោយ Palpatine
សម័យទំនើប
59
0
0
0
0
0
បង្ហាញ 24 ក្នុងចំណោម 1546