Assisted reproductive technologies (ART) can bypass female-modulated sperm selection (top of figure) that ensure that genetically compatible or competent sperm are used for fertilization. ART can also ...

Science education reform continually occurs through the replacement of current teaching methods with alternatives that are designed to enhance student performance. Newly adopted teaching strategies ...

Given the expense, time and considerable teacher effort required to perform hands-on activities in the classroom, their consequences for student learning need to be evaluated. This study takes one ...