Changes

add, subtract, multiply and divide.

add, subtract, multiply and divide.

====Affordances of the activity====

====Affordances of the activity====

* The student can add, subtract, multiply or divide numbers or

* The student can add, subtract, multiply or divide numbers or numbers.

numbers.

* Students can make all kinds of divisions (between numbers of fractions).

* Students can make all kinds of divisions (between numbers of

fractions).

* The student can add fractions with the same denominator.

* The student can add fractions with the same denominator.

* Students can multiply decimal numbers by 10, 100, 1000.

* Students can multiply decimal numbers by 10, 100, 1000.

* Students can calculate the percentages.

* Students can calculate the percentages.

* Students can calculate problems in situations involving addition,

* Students can calculate problems in situations involving addition, subtraction, multiplication or division.

subtraction, multiplication or division.

* Students can share their findings with a classmate of the class through the XO.

* Students can share their findings with a classmate of the class through the XO.

* The teacher will save time and be able to quickly appease conflict cognitive that may generate some results.

* The teacher will save time and be able to quickly appease conflict cognitive that may generate some results.

====Degree of centrality of the activity====

====Degree of centrality of the activity====

Calculate activity is very central to all mathematical tasks

Calculate activity is very central to all mathematical tasks