Fisheries scientists make sure that fish populations ("fisheries") are managed properly, neither over- or under-utilized, to maintain long-term economic and ecological stability. Scientists collect data and conduct surveys to determine fish populations, and then make recommendations about how many fish may be caught by commercial and…

The NGSS MS-ETS1 Engineering Design (1-4) is the focus of the article. Development of a challenging problem-based activity that is an improvement over the traditional egg drop competition is emphasized. Quantification of data collected and real-world relevance are two activity components that are viewed as improvements over the egg drop. The…

This column presents ideas and techniques to enhance science teaching. In this month's issue an upper elementary Science, technology, engineering, and math (STEM) challenge brings an engineer into the classroom while emphasizing cooperation, communication, and creativity. STEM activities come in various shapes and sizes. Some are quite involved…

Across the United States, political leaders, educators, and business persons are issuing an urgent call for reform in STEM education (NGSS Lead States 2013). One important response to this call is Integrated STEM, which the National Governor's Association (2007, p. 7) says involves, "... an emphasis on design and problem solving in…

The power of 3D printing technology has grown exponentially in just the past few years--people around the world are using 3D printers to prepare food, create tailored clothing, build cars and homes, and advance the medical field in ways that never seemed possible. In classrooms across the nation, 3D printers have become increasingly common because…

Educating future scientists and citizens is more effective if students are guided to correctly apply what they learned in school to their daily lives. This experience-based work is focused on the study of a well-known commercial product: cat litter. This material offers different starting points for a critical examination. Questions related to…

Presents a sample HyperQuiz, a strictly-for-fun, genius trapping contest for occasions when the syllabus and coverage do not bear down too severely. Promotes collaboration between students, library research, and development of scientific thinking skills. (JRH)

Introduces a chemistry lab activity that is suitable for almost any level of science class. Provides students with five solutions and asks them to determine if they have five distinct compounds or if any are the same. (YDS)

Discusses Mission Possible, a problem-solving strategy that provides a wide range of learning experiences and encourages students and teachers to explore the use of scientific ideas and principles. Describes setting up a Mission Possible Day for primary students in a rural community. (Author/NB)

Describes an activity on density and its role on an object's floating or sinking. Uses canned regular and diet Coke soda pop to demonstrate differences in density. (YDS)

Presents an activity for students to construct their own two-cup balances. Suggests some alternatives for rejuvenating weak bar magnets. Describes how to remove burnt carbon deposits from glass vessels. (NB)

Explores acids and bases using different indicators, such as turmeric, purple grape juice, and lichens. Because some of these indicators are not as sensitive as cabbage juice or litmus paper, determining to which acids and bases each indicator is sensitive presents an enjoyable, problem-solving challenge for students. Presents directions for…

Explains Occam's razor which is a guiding principle in scientific methodology. Describes a genetics problem to demonstrate Occam's razor. (YDS)

Perturbation theory is presented as an invaluable tool for solving a majority of physically interesting problems involving both macroscopic and microscopic objects. Its use in Newtonian mechanics is emphasized.. The method is illustrated with three examples. (KR)

Introduces a scientific mystery story problem on the chemical and physical properties of metals involving characters Sherlock Holmes and Dr. Watson. (YDS)