Haryana Board, also known as the Haryana Board of School Education (HBSE), releases yearly sample papers and marking scheme ...

The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...

This study explored the effects of a Problem-Based Computer-Assisted Instruction (PBCAI) on students' earth science achievement in Taiwan. One hundred and fifty-nine 10th grade students enrolled in ...