Interactive Mathematics Miscellany and Puzzles

Interactive Mathematics Miscellany and Puzzles

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|Contents|

|Front page|

Index page

CTK wiki-math

Privacy policy

Help with math

Arithmetic

Algebra

And much much more ...

Probability

Trigonometry

Visual illusions

Cut the knot!

What is what?

Manifesto

Eye Opener Series

Math as language

CTK Insights blog

Problem solving

Outline mathematics

Book reviews

Interactive activities

Did you know?

Eye opener

Draw Ellipse

Math Olympiads

Proofs in mathematics

Things impossible

Index/Glossary

Fast Arithmetic Tips

Stories for young

Word problems

Mathematics Games %26 Puzzles

Our logo

Make an Identity

Elementary geometry

CutTheKnotMath facebook page

Tell a friend

Talk about it

Base Conversion

Divisibility Criteria

Euclid's Game

Hour glass timing

Magic in Square

Napier Bones

Number Guessing Game

Arithmetic Word Problems

Online practice

Three Jugs Problem

Box Labels

Fish Soup game

Goat, Cabbage and Wolf

Josephus Flavius' problem

Mastermind Variants

Peg Solitaire

Scoring

Toads And Frogs Puzzle

Toads And Frogs in 2D

Tower of Hanoi

Tromino Puzzle

And much much more ...

Lewis Carroll's Logic Game

Venn Diagrams

Logic Word Problems

And more ...

Fractals %26 Chaos

Color Cycling on Mandelbrot

Emergence of Chaos

All Peano Curves

Cantor sets

Pascal Triangle

Fractal Curves and Dimension

Iterated Function Systems

Iterations in Mandelbrot Set

Julia Sets

Logistic Model

Plane Filling Curves

Sierpinski Gasket

Toying with Tremas

Fallacies

Curry's Paradox

Delian Problem Solved

A Faulty Dissection

Langman's Paradox

Sam Loyd's Son's Dissection

Rouse Ball's Fallacy

Calculus

Equations of the Straight Line

Function, Derivative and Integral

Lagrange Interpolation

Riemann Sums

Rolle's and Mean Value

Taylor Series for Cosine

Combinatorial Games

Date Game

Grundy's Game

Kayles

Nimble

Northcott's game

One Pile

Plainim Mis%26#232;re

Subtraction Game

Take-Away Games

Turning Turtles

Wythoff's Nim

And much more ...

3-Term Arithmetic Series

Binary Color Device

Candy Game

Chebyshev polynomials

Counting Triangles

Averages

Heads and Tails

Multiplication Table

Interest Calculations

Letter Counting

Merlin's Magic Squares

Proizvolov's Identity

Pythagorean Triples

Self-documenting Sentences

What's next?

Word Problems

Online practice

Visual Illusions

Balls and Shadows Illusion

Bulging lines illusion

Gerbino's Illusion

Heaver: A Visual Illusion

Hering Illusion

Judd Illusion

Kanizsa Triangle

M%26#252;ller-Lyer Illusion

Necker Cube

Perspective Illusion

Poggendorff Illusion II

Ponzo Illusion

Revolving Circles Illusion

Twisted Cord Illusion

Wundt Block Illusion

Z%26#246;llner's Illusion

And much much more ...

Birds On a Wire

Buffon's Noodle

Misuse of Statistics

Monty Hall Dilemma

Parrondo's Paradox

Probability and Infinity

Computer Math Magic

Arithmetic magic matrix

Bachet's Magic Trick

Calendar Magic

Gergonne's Magic Trick

Hummer's Mind Reader

Magic in Square

Number Guessing Game

Guessing Two Numbers

Combinatorics

Bicolor Tower of Hanoi

Art Gallery Theorem

Coin change

Critical Path

Latin Squares

Listing all permutations

Mazes

Monotone Sequences

A Pigeonhole Problem

Project Scheduling

Scrub Tile Puzzle

Shuttle Puzzle

Mathematics Miscellany

Disappearing Rectangles

Genetic Algorithm

Impossible Fork

Projectile Trajectory

Random Dot Stereograms

Ratchet Effect

3 Utilities Puzzle

All About Altitudes

Angle Bisectors

Area of Parallelogram

Asymmetric Propeller

Butterfly Theorem

Sangaku: Thoughts %26 Problems

Fagnano's problem

Inversion: Reflection in Circle

Mathematics in Pizzeria

Morley's Miracle

Outline Solutions

Poles and Polars

Pythagorean Theorem (122 proofs)

Reflection in Line

Translation Transform

Triangle geometry

Breaking Chocolate Bars

Farmer and Wife

Make Your Move, Kid!

Solitaire on the Circle

Two Butterflies Theorem

Mathematics in Social Science

Method of Markers

Method of Sealed Bids

Fast Power Indices

Hamilton's Apportionment

Huntington-Hill Apportionment

Social Choice

And much much more ...

Mathematical Droodles

Circle Chains

Diagonal Count

Directly Similar Figures

Equal Incircles Theorem

Eyeball Theorem

Fagnano's problem

Maxwell's Theorem

Poncelet's Porism

Shape of Constant Width

Squinting Eyes Theorem

Angle Trisector

Broken Calculator

Cycloids

Ellipse and Other Curves

Geoboard

Peaucellier Linkage

Pythagorean Theorem

And more ...

|Contact|

Alexander Bogomolny

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