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Interactive activity. The student chooses a number of up to six digits and the order of units to approximate it to. The system shows them the correct approximation.{j}
Interactive activity to practise mental calculations with multiplications (with a 1 or 2-digit multiplicand and a 1-digit multiplier). The student decides the time he/she has to answer (from 1 to 30 seconds). The system shows the number of correct answers out of ten tries.{j}
Interactive activity where the student practises: the terms and the meaning of a power how to calculate the result of some easy powers how to write a product of equal factors as a power how to complete what is missing in a series of equalities between a product of equal factors, their representation as a power and the final result.{j}
Animation. With examples and step by step, two ways are presented to solve operations with powers, a long way and a short way. It is stated that operations with powers are useful to simplifiy certain operations.{x}
Interactive activity where the student completes the divisors of two numbers, the common divisors of the same numbers and, finally, their greatest common divisor. The system shows if the answer is correct or not.{j}
Interactive activity where the student completes some of the multiples of two numbers, the common multiples of the same numbers and, finally, their least common multiple. The system shows if the answer is correct or not.{j}
Resolution of an operation with additions and subtractions in two different ways, one operating in the order of appearance of each number and the other adding positive numbers on one hand and negative numbers on the other hand.{x}
Resolution of an operation of additions and subtractions with parentheses in two different ways, one starting to operate within the parentheses and the other one starting by removing the parentheses.{x}
Resolution of an operation of additions and subtractions with parentheses in two different ways, one starting to operate within the parentheses and the other one starting by removing the parentheses.{x}
Examples of problems resolved where the rule of three is used to calculate different amounts: calculation of the part, calculation of the total and calculation of the percentage.{x}
Introduction to the unit, using the installation of a slide as an example where several angles are used and simple operations are carried out with them.{x}
Presentation that shows several types of quadrilaterals and gives the chance of selecting each one to see their generic properties and check them visually.{x}
Activity in two parts. In the first part, they have to determine the number of axes of symmetry of several polygons. In the second part, they have to complete the parts missing in a flat shape to make it symmetrical to a vertical and to a horizontal axis.{j}
Presentation that shows how to calculate the area of a rhomboid by its subdivision into triangles that are rearranged to form a triangle of the same area.{x}
Presentation that shows how to calculate the area of a rhomboid by its subdivision into smaller triangles that are rearranged to form a rectangle of the same area.{x}
Presentation that shows how to calculate the area of a rhomboid by its subdivision into 8 isosceles triangles that are rearranged to form a rectangle of the same area.{x}
Activity that develops the construction of a pie chart. where the degrees corresponding to each part of the chart have to be calculated and then allocated to the pie chart once created.{j}