Solving basic problems

Basic Additive Problems: Classifying Statements

The Actilud site offers a range of configurable exercises for working on basic additive problems. The problems are classified according to Vergnaud’s typology – they are not sorted by the type of operation they involve – addition or subtraction – but by their nature. The same type of problem can therefore be solved by either […]

Solving basic problems

Modeling additive problems with the bar diagram

In this article, I’m going to suggest some ideas for working on the bar model from the Actilud.com website, which, once adapted to your classroom, will save you time and efficiency thanks to digital technology. This article does not aim to explain in detail the educational interest of bar diagrams; there is a whole literature […]

Topology and reasoning

The L game, the strategy of translations, symmetries and rotations

Requiring little material: two pawns, two L-shaped tokens of different colors, a 4×4 checkerboard, and having very simple rules, the L game is educationally very interesting because it allows the development of the spatial representation of objects. It is a fun application of the concepts of translation, symmetry and rotation. The rules of the L […]

Topology and reasoning

Hanoi Mystery, the puzzle of upside-down towers with a hint of the unknown

The Hanoi Mystery puzzle game is largely inspired by the famous Tower of Hanoi puzzle. The logic behind the puzzle is the same, but it’s more playful. Principle of the game The game is played by two players. Each game has two rounds. One player is the “coder” and sets up the puzzle; the other […]

Topology and reasoning

Sudoku: Organizing Space

Sudoku allows you to practice spatial organization while respecting the constraint of having unique pieces in each row, column, and region. It’s an excellent exercise in observation, concentration, and logic. It also introduces the concepts of rows and columns, and therefore horizontality and verticality. It’s also a great way to memorize numbers. Game rules Sudoku […]

Topology and reasoning

Admission to the Gorgias Academy: The Logic of True and False

Available in the Logic Puzzles section, the game Admission to the Gorgias Academy combines reading with logic. To solve the riddles, you need to read the statement carefully and, above all, analyze the propositions made and rank them according to the number of liars. The principle The player lives in Greece in 450 BC. He […]

Turing Machine: the challenges

The Turing Machine: Introductory Challenges

Brave New World It’s about making people happy. Quite uniformly. Here is the starting and ending situation: There’s no difficulty here: a single state is enough. Here’s a video showing a possible solution and how to program it. Our program transforms all sad or angry emoticons into smiling ones, sparing those that are already in […]

Decimal numbered dominoes

Counting to 10 with the decimal number domino

Learning to count, discovering numbers: the decimal number domino can provide a visual aid to this learning process. This article explains the pedagogical principles behind this tool and suggests a few activities. Warning The teaching guidelines given here are general. Whether you use them with dominoes or not, you can apply them to all other […]

Zebra puzzles: solving and designing

Solving a zebra puzzle with the editor

How to solve any zebra puzzle from a magazine? Use our solver ! The zebra puzzle editor on Actilud has two functions: solver designer Solver mode allows you to solve a puzzle taken from a magazine. This mode does not use the statements; it starts from the distribution of signs on the grid and calculates […]