as First Grade of Primary (). In Ireland, the equivalent is known as "First Class" or . Students are usually 6–7 years old at this level, and it serves as the 3rd year of primary school. In Iceland, children enter the first grade (1.bekk) the year they turn six. In Italy, first grade corresponds to . In Norway, children enter the first grade the year they turn six. In Poland children enter their first year of school () aged seven (from 2012 to 2016 the entry age was six; prior thereto, it was also seven). In Portugal, children enter their first year of school () aged five or six. In Slovenia, children are aged 5 years and 8 months to 6 years and 8 months at the beginning of this grade. In Sweden, children are 7 years old when entering first grade (), and 6 years old when beginning "", the first year after kindergarten. In Spain, children are five to six years old when they enter the first year of elementary school (). In the Netherlands, first grade corresponds to Group 3, the third year of primary education. In Russia, children aged 6 to 8 years old enter (pervyy klass, first grade). In Ukraine, children aged six to seven years old enter (pershyy klas, first grade). United Kingdom In England and Wales, the first year of primary school is called reception, with pupils 4 to 5 years old. However, the first compulsory school year is Year One, when children are five. As most primary schools have a reception class which is treated like a compulsory school year, i.e. the children wear a uniform and have the same school hours, most children start school in reception. The first grade is the equivalent of Year Two. Scottish pupils usually enter the corresponding stage one year younger. In Northern Ireland. they are two years younger. In Scotland, first grade is equivalent to Primary 3. Pupils in Primary 3 are 7 to 8 years old. Scotland calls these grades primary school, as Primary 1 starts after kindergarten (nursery school) at 4 to 5 years of age. Primary school continues through Primary 6. North America Canada United States In arithmetic, students learn about addition and subtraction of natural or whole numbers, usually with only one digit or two digits, and about measurement. Basic geometry and graphing may sometimes be introduced. Clock and calendar time,