Ministerio De Educacion: Flecha

Practice your mental math by finding two numbers knowing their sum and difference.

These are five interactive units for Elementary math. Each unit is structured in four parts: explanation, activities, dictionary and assessment.

Practice your mental math by finding two numbers knowing their difference and product.

This is a game about subtraction of numbers from 1 to 9. A group of two players are needed for this game.

Take this challenge by trying to put in order the pieces from 1 through 15. Geogebra plugin required.

Try to find the line of symmetry of these 8 figures. If you find it the two figures should coincide.

This is a game about the product of two numbers from 1 to 9. A group of two players are needed for this game.

Remove four matches to the center of the square then repositions the other matches in such a way that the sum of them on each side is 11.

See if you can connect the dots of the same color with horizontal and vertical segments without leaving the grid and without intersecting the lines or crossing the colored dots.

This application has a simulation which computes the product of two numbers and the square of a number.