1 Subjects: “...; Primary education; Primary level; Elementary School; Primary school; Primary school lower level; Primary...”

2 Subjects: “... school; Primary school lower level; German academic secondary school; Grammar School; Secondary school...”

3 Subjects: “...primary schools...”

4 Subjects: “...primary schools...”

5 Subjects: “...primary school...”

6 Subjects: “..., Secondary school, Primary education, Primary level, Elementary School, Primary school, Primary school lower...”

7 Subjects: “...Primary school lower level...”

8 Subjects: “...primary school...”

9 “... of mathematics in primary school. The article is aimed at problems of children in the area of natural numbers...”

10 “... primary schools for teaching Health Education, eventually Biology. Chronic non-communicable diseases...”

11 “... and hygiene education directed towards children and staff in kindergarten and primary school, significantly...”

12 “... long-term cooperation with two primary schools of inclusive type, in which pupils with different forms...”