Testing directed to aims and outcomes of learning Chemistry

Abstract

This paper is on different approaches concerning estimating a certain level of knowledge or development of certain abilities form the field of natural sciences, particularly Chemistry. Examples of tasks have been illustrated and they show how abilities of students can be tested concerning observing the change of substances, to give their own assumptions, form explanations and make conclusions based on observations and to plan simple research. The proposed tasks give a feedback about connecting macro level (observed characteristics and changes of substances), micro level (structure of substances) and symbolic level (qualitative and quantitative meaning of chemical symbols, formula and equations of chemical reactions).

U radu su prikazani različiti pristupi i iskustva u vezi sa proveravanjem usmerenim na utvrđivanje određenog nivoa znanja ili razvijenosti određenih sposobnosti u oblasti prirodnih nauka i posebno hemije. Primerima zadataka ilustrovano je kako se mogu ispitivati sposobnosti učenika da zapažaju svojstva i promene supstanci, da iznose pretpostavke, formulišu objašnjenja i izvode zaključke na osnovu zapažanja, da planiraju jednostavna istraživanja. Predloženi zadaci daju povratnu informaciju o povezivanju makronivoa (opažena svojstva i promene supstanci), mikronivoa (struktura supstanci) i simboličkog nivoa (kvalitativna i kvantitativna značenja hemijskih simbola, formula i jednačina hemijskih reakcija).