Teachers' perceptions of students' excuses for academic difficulties

Ninety-seven teachers described situations in which their students experienced academic difficulties and gave reasons (excuses) to explain their difficulties. Teachers indicated whether or not they believed the reasons students gave, what they thought the “real” reasons for the students' difficulties were, and how they reacted and behaved toward the students. Analysis of teachers' reports indicated that students were most likely to attribute their academic difficulties to external, uncontrollable factors, whereas teachers tended to believe that the “real” reasons for students' difficulties were internal and controllable. Teachers reported that they would react in a positive manner toward the students whether or not they believed the reasons the students gave to explain their difficulties. Implications of these findings for student motivation are discussed.     

Frankly Speaking

Government teachers who have a sincere desire to make their courses significant and interesting will find Dr. Struve's criticisms justified and his suggestions useful.     

Online training of TPACK skills of higher education scholars: a cross-institutional impact study

Higher education institutions should provide adequate training for teachers in order to increase their awareness of the complex interplay between technology, pedagogy and the cognitive knowledge in their disciplines. However, research has shown that providing effective staff development from teacher educators to support these teachers’ skills is not straightforward. An online teacher training programme created and implemented by a team of 14 teacher educators in a cross-institutional programme in the Netherlands was followed by 67 teachers. Data were gathered using a TPACK (Technological, Pedagogical, Content Knowledge) instrument in a pre-post test design. Furthermore, (perceived) learning satisfaction was measured in order to determine whether the design was appropriate. The results indicate that the teachers’ TPACK skills increased substantially. Furthermore, most participants were positive about the design and implementation of the online professionalisation programme. Nonetheless, not all teachers were able to effectively learn in this context, requiring further fine-tuning and research.     

Rapid microfluidic solid-phase extraction system for hyper-methylated DNA enrichment and epigenetic analysis

Genetic sequence and hyper-methylation profile information from the promoter regions of tumor suppressor genes are important for cancer disease investigation. Since hyper-methylated DNA (hm-DNA) is typically present in ultra-low concentrations in biological samples, such as stool, urine, and saliva, sample enrichment and amplification is typically required before detection. We present a rapid microfluidic solid phase extraction (μSPE) system for the capture and elution of low concentrations of hm-DNA (≤1 ng ml⁻¹), based on a protein-DNA capture surface, into small volumes using a passive microfluidic lab-on-a-chip platform. All assay steps have been qualitatively characterized using a real-time surface plasmon resonance (SPR) biosensor, and quantitatively characterized using fluorescence spectroscopy. The hm-DNA capture/elution process requires less than 5 min with an efficiency of 71% using a 25 μl elution volume and 92% efficiency using a 100 μl elution volume.