The Nobel Prize in Physiology or Medicine in 2009 was awarded to Elizabeth H. Blackburn, Carol W. Greider, and Jack W. Szostak for the discovery of "how chromosomes are protected by telomeres and the enzyme telomerase." The discovery has important implications in the processes of cellular aging and carcinogenesis. Telomeres are satellite DNA…

Historically, educational policymakers have focused on and invested heavily in accountability testing of "learning" to leverage improvement in student learning. Through accountability testing, policy makers aim to communicate standards, establish performance goals, provide data through which educators can analyze and improve school…

The "Condition of Education" is an annual report mandated by the U.S. Congress that summarizes the latest data on education in the United States. This report uses data from across the National Center for Education Statistics (NCES) and from other sources and is designed to help policymakers and the public monitor educational progress.…

Send your pupils into the autumn term half-term holiday with a task that requires them to explore more about the biology associated with Halloween. This article offers a fun approach, with a pub quiz format based on bats, skeletons, pumpkins and witches, that is suitable for lessons following the end-of-topic test, for STEM clubs or for PTA…

The percentage of students choosing the correct answer (PSCA) on 17 multiple-choice algorithmic questions taken from general chemistry exams is analyzed. PSCAs for these questions varied from 47 to 93%, and a decrease of 4.5% in PSCA was observed with each additional step in the algorithm required for solving the problem (R[superscript 2] = 0.80).…

In this study, the effect of the context-based approach on pre-service primary school teachers' understanding of matter and its states and their attitude towards chemistry was investigated. Using a simple experimental design, the study was conducted with 35 pre-service primary school teachers who were exposed to context-based material with…

The purpose of the study was to investigate Junior High School science teachers' knowledge about contextualised science instruction. The study employed descriptive survey design to collect data. A test, Test of Science Teacher Knowledge of Contextualised Science Instruction was developed and administered to collect data on teachers' knowledge of…

Deictic linking gestures, hand and arm motions that physically embody links being communicated between two or more objects in the shared communicative environment, are explored in a cross-cultural sample of mathematics instruction. Linking gestures are specifically examined here when they occur in the context of communicative analogies designed to…

We examined the influence of several students' cognitive and motivational factors on 8th graders' science achievement and also gender differences on factors that significantly contribute to the science achievement model. A total of 99 girls and 83 boys responded all the instruments used in this study. Results showed that girls outperformed boys on…

This paper describes a curriculum-based multidimensional computerized adaptive test that was developed for Indonesia junior high school Biology. In adherence to the Indonesian curriculum of different Biology dimensions, 300 items was constructed, and then tested to 2238 students. A multidimensional random coefficients multinomial logit model was…

This study aims to determine the influence of distance asynchronous teaching of Physics-I topics via intelligent tutoring systems (ITSs) on academic achievement and permanence. A Web-based learning environment was created by use of an ITS called "Turkish Intelligent Tutoring System" (TURKZOS) for such Physics-I units as work, energy, and…

The work we present in this paper aims to help teachers create multiple-choice science tests. We focus on a scientific vocabulary-learning scenario taking place in a Basque-language educational environment. In this particular scenario, we explore the option of automatically generating Multiple-Choice Questions (MCQ) by means of Natural Language…

In one experiment 97 undergraduate students learned about plate tectonics from a multimedia presentation involving narrated animations and support in one of four forms. Support in the prompting condition included hints inducing participants to self-explain critical information. The signaling condition included overviews recapping critical…

Multimedia presentations that combine visual and verbal information are widely used for instructional purposes. While the design of the text-graphic relationship is difficult, several design strategies with the potential to reduce cognitive load have been identified in the literature. The purpose of this study is to examine how split-attention,…

In traditional teaching, the fundamental concepts of electromagnetic induction are usually quickly analyzed, spending most of the time solving problems in a more or less rote manner. However, physics education research has shown that the fundamental concepts of the electromagnetic induction theory are barely understood by students. This article…