ATRACTOR

Around the wheel

Attractors

Beautiful triangles

Coloured Theorems

Comparing two geometric problems

Conics

Convex Geometry

Courtesy at stake

Curvature and Torsion

Dandelin Spheres

Dice row

Dynamics of a family of exponentials

Dynamics of the Gamma Function

Euclidean Algorithm

Fermat′s Theorem

Figures that tremble

Geometric Puzzle

Grass, rabbits and foxes

How to rank pages on the web

Hyperbolic slit

Identification numbers with check digit algorithms

Incommensurability

Induction (in Portuguese)

Inversion

Isomorphic games

Knot table

Knots exhibition (Bangor University)

Labirintos Digitais - Gazeta de Matemática, 195/2021 (in Portuguese)

Light and Colour

Logical Operations

Math without words

Mathematical Images

Mathematical Training of Lifeguards

Mechanism

Minimal Networks

Moebius strip

Morley′s Theorem

Movies produced by Atractor

Napoleon Triangles

On the average

Paths on a surface

Pendulums

Polygonal sequence

Polyhedra

Polynomials versus polygons

Prey and predators

Rectangular Billiard

Recycling the error

Riddles with numbers

Shells

Simetria de uma figura plana (in Portuguese)

Spherical Geometry

Spining without falling

Stamping patterns

StarLogo

Symmetry

Synthetic Geometry of a Triangle

The dynamics of a trick

The loxodrome

The mathematics of tides

The number Pi

The Sierpinski Triangle and the Towers of Hanoi

The Sperner Game

Triangles with multiple angles

What is a symmetric image?

Digital maze - game

Mathina Project

Mathina, aprendendo matemática enquanto lê e joga, revista Educação e Matemática, 2022 (in Portuguese)