English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this study, the chemistry achievement of the Korean 8th grade students in the Third Inter-national Mathematics and Science Study-Repeat(TIMSS-R), which was administered internationally in 1999,was analyzed. By the 6th national curriculum, 31 chemistry problems were selected from the categories of 'classification of matter', 'structure of matter', 'chemical reactivity and transformations', 'physical properties and physical changes of matter', 'heat and temperature', 'subatomic particles', 'pollution', 'scientific method',and 'scientific measurements' among the total 143 problems. Based on the analysis of the percentage of cor-rectness on each problem, the weak and strong points of the 6th curriculum were discussed. The implications for the development of national curriculum and textbook are suggested.

journal of the korean chemical society

The Analysis of the Korean Middle School Students' Responses to Chemistry Problems Under the 6th National Curriculum in the Third International Mathematics and Science Study-Repeat (TIMSS-R)