In building projects or renovations, architects and administrators tend to label the science instructional space as a "science classroom," as opposed to a "science laboratory." What exactly is a science classroom, and what is a science laboratory? According to OSHA's Laboratory Standard (OSHA #29 CFR part 1910.1450), "laboratory" means a facility…

The United Nations has proclaimed 2011 as the International Year of Chemistry and, as part of that designation, has invited teachers worldwide to participate with their students in the Global Water Experiment (IYC 2010). Students have the opportunity to take part in four different water-related investigations to assess water quality and then share…

Ocean acidification is one of the most serious environmental issues facing the planet (e.g., Doney 2006; Guinotte and Fabry 2009). It is caused by excess carbon dioxide (CO[subscript 2]) in the atmosphere. Human activities such as burning fossil fuels put CO[subscript 2] and other heat-trapping gases into the atmosphere, which causes the Earth's…

Science is always changing. Its very nature requires that scientists constantly revise theories to make sense of new observations. As they learn science, students are also constantly revising how they make sense of their observations, which requires comparisons with what they already know to process new information. A teacher can take advantage of…

For students to develop an understanding of science content and processes, teachers must create classroom environments in which students use inquiry to understand the natural world. However, teachers frequently find it difficult, if not impossible, to demonstrate complex scientific concepts, which textbooks often fail to properly explain. During…

This month's column features two true stories about the use of chemicals in the middle school science classroom. The lesson of these stories is simple. Certainly, it is prudent to have age-appropriate experiences in science, given the developmental constraints of students in middle school. On the other hand, when the curriculum necessitates…

Students within the Findlay, Ohio, City School District, as well as students across the country, struggle with understanding physical and chemical changes. Therefore, in this article, the authors suggest some standards-based activities to clarify misconceptions and provide formative assessments to measure your students' progress as they determine…

High school chemistry can be intimidating to some students, so it is critical that we engage students in nonthreatening preparatory investigations during middle school. Based on the learning cycle model (Bybee and Landes 1990), this lesson invites students to investigate disposable diapers. As they explore the properties of sodium polyarcylate, a…

Connecting science with different cultures is one way to interest students in science, to relate science to their lives, and at the same time to broaden their horizons in a variety of ways. In the lesson described here, students make kimchi, a delicious and popular Korean dish that can be used to explore many important chemistry concepts,…

The ingredient lists of your shampoo, makeup, and moisturizer are likely to include a dizzying number of unknown ingredients. What these ingredients are and do is a mystery to most consumers. However, many cosmetics contain ingredients that are linked to health problems and environmental concerns. While examining every ingredient in your beauty…

The haphazard storing and tracking of chemicals in the laboratory is a serious safety issue facing science teachers. To get control of your chemicals, try implementing a "chemical tracking system". A chemical tracking system (CTS) is a database of chemicals used in the laboratory. If implemented correctly, a CTS will reduce purchasing costs,…

The "What's the "matter" With XOD" activity addresses students' misconceptions and refines their ideas about phases of matter. This activity introduces the characteristics for solids, liquids, and gases, and begins a discussion about physical and chemical changes and how matter can cycle through different phases. Depending on class size and…

Many of the skills and talents required to be a successful scientist, such as analysis, experimentation, and creativity, can be developed and reinforced through art. Both science and art challenge students to make observations, experiment with different techniques, and use both traditional and nontraditional methods to express their ideas. The…

The purpose of this article is to share a learning-cycle sequence of lessons designed to convey the particulate nature of matter through use of physical models and analogical thinking. This activity was adapted from Conceptual Chemistry, a long-running professional development program for teachers of grades 4-9. Conceptual Chemistry's approach is…

An infrared (IR) thermometer lab offers the opportunity to give science students a chance to measure surface temperatures, utilizing off-the-shelf technology. Potential areas of study include astronomy (exoplanets), electromagnetic spectrum, chemistry, evaporation rates, anatomy, crystal formation, and water or liquids. This article presents one…