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76 – 100 of 213 Articles

  • Editorial cover
    Editorial | November 2017 Lone Ranger, No More!

    AACT Governing Board member Jenny Bishoff shares her experience connecting with other teachers of chemistry and encourages members to get involved.

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    Nuts & Bolts | November 2017 Developing Students’ Chemistry Information Skills

    Digital literacy is a key skill for 21st century learners, and secondary students need to learn to select appropriate sources when conducting a literature search in chemistry. The author describes an experiential activity to provide experience in searching and assessing chemical information. Using a science news article, students learn to formulate and refine a search question in order to obtain a manageable number of relevant references.

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    Chemistry Fun | November 2017 Atomic Theory Timeline

    In this edition of ChemFun, match famous chemists with their contribution to atomic theory and year of their work.

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    Resource Feature | November 2017 A Particulate Representation of Molarity

    In addition to using a simple activity about investigating the differences Kool-Aid concentration and completing molarity calculations, students work with pictures at the particle level to develop a deeper understanding of solutions and molarity.

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    Simulation | November 2017 Predicting Shifts in Equilibrium: Q vs K

    In this simulation, students will take a 15 question quiz. Each quiz question has two parts. The first part requires the student to calculate the value of the reaction quotient, Q. In the second portion of the question, the students will compare the value of Q to the equilibrium constant, K, and predict which way the reaction will shift to reach equilibrium. The simulation includes five different reactions which each have three scenarios: Q > K, Q = K, and Q < K.

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    Classroom Commentary | September 2017 One Teacher’s Journey on the Path to Modeling Instruction

    This article describes a teacher’s journey and reflections over her 27-year career as she moved from a traditional chemistry classroom to one using modeling instruction techniques. To illustrate a central insight she gained along her journey, she describes one activity in particular, Sticky Tape. In this activity, students find evidence for charged particles smaller than an atom, and the discussion after the activity ultimately leads them to the subatomic particle we know as the electron. Making the move to incorporating modeling instruction transformed the author’s classroom and teaching style, and her students are now much more engaged in their own learning.

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    Resource Feature | September 2017 ​Increasing Student Comprehension of VSEPR Theory​

    In the activity described in this article, students construct physical models of molecular shapes. However, students are not told what the preferred arrangements of electron pair domains are. Instead, they derive the arrangements. Students are given the opportunity to conceptualize what is happening when one electron pair domain acts upon another, and to understand how those interactions result in the molecular geometries predicted by VSEPR theory. As an outcome of examining the physical basis of the VSEPR model, students should have a much better grasp of the implications of electron pair repulsions on molecular shape, and should be better able to understand, communicate, and apply that understanding.

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    In My Element | September 2017 Something Happened on My Way to Becoming a Rock Star…

    A teacher shares her story about her unconventional path to teaching chemistry. Read about a once-hopeful Broadway star who began college as a music major eventually evolved into a passionate high school chemistry teacher.

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    Editorial | September 2017 Lift as You Climb

    AACT President Jenelle Ball highlights many of the exciting benefits of AACT membership as the organization approaches its third year in existence. She encourages members to get involved, and also promotes many of the valuable resources and opportunities that AACT makes available. Jenelle shares her own plan for incorporating resources in her classroom this year, and also offers suggestions about how teachers can use the wide variety of benefits to enhance their own teaching.

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    Resource Feature | September 2017 Introducing the Chemistry of Color: A Resource Collection

    This article highlights a set of lessons developed by a team of content writers, sponsored by PPG, using color as a general theme. The lessons use chemistry to explore various aspects of the science behind paints and coatings.

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    Nuts & Bolts | September 2017 Helping Students Use their English Language Skills

    This article describes five assignments and projects that are aimed to help all students improve their English language skills.

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    Nuts & Bolts | September 2017 Embracing Chemical Literacy

    Chemical literacy has been a journey and a struggle — both of which the author has enjoyed. The struggle has ultimately improved her teaching, and in this article, her intention is to share ideas for improving the chemical literacy of students in various ways.

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    Simulation | September 2017 Measuring Volume

    In this simulation, students will participate in a 10 question quiz. The quiz questions are each made of two parts, with the first part requiring the student to analyze an image of a graduated cylinder in order to report an accurate measurement. Students must use the correct number of digits based on the markings presented on the cylinder when reporting the measurement. In the second portion of the question the students will determine the uncertainty value of the graduated cylinder, again by analyzing its markings. The simulation is made up of several different sizes of graduated cylinders, each containing unique markings, so students will be challenged to analyze each individually.

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    Chemistry Fun | September 2017 Lise Meitner Video Activity

    In this activity, students will complete a short series of questions as they watch the Founders of Chemistry video about Lise Meitner. The video tells the story of Lise Meitner, a pioneering female scientist in the field of nuclear chemistry, who was denied a Nobel Prize but has an Element named in her honor.

  • Earth 330 220
    Classroom Commentary | May 2017 Finding Chemistry Connections in Climate Change

    The scientific evidence that underlies global warming and climate change has many connections with common chemistry topics. Incorporating global warming and climate change concepts into your curriculum gives context to the importance of understanding chemistry, and can help students develop a better understanding of why chemistry truly is the central science.

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    Classroom Commentary | May 2017 Read! But Read the Right Things

    Contemplating some summer reading? The author shares his thoughts on two books that are rich in details about the progression of science, and also explore more important, fundamental insights about the discipline.

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    Resource Feature | May 2017 5th Grade Chemistry — as Taught by High School Students

    This end-of-the-year project for high school chemistry students involves learning and using inquiry strategies to teach chemical concepts to fifth-grade students through hands-on activities. The author outlines the project, including conversations with elementary teachers, planning logistics, field trip details, and student preparation. Read about the many rewards of a well-planned and executed project that binds the grade levels through chemistry.

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    Editorial | May 2017 The Future Looks Bright

    AACT President Scott Hawkins reflects fondly on his year as AACT president, the accomplishments of AACT, and the promise for a bright future. He also shares news about upcoming events, governing board election results, and member benefits.

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    Chemistry Fun | May 2017 Periodic Table of...Mistakes

    Can you spot the mistakes in this periodic table?

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    Simulation | May 2017 Isotopes & Calculating Average Atomic Mass

    In the May 2017 simulation, students first learn how the average atomic mass is determined through a tutorial based on the isotope abundance for Carbon. Students will then interact within a workspace where they will select the number of isotopes, the mass of each isotope as well as their abundancies in order to successfully build a mystery element. Finally they will use their choices to calculate the average atomic mass of the mystery element.

  • Hazard
    Nuts & Bolts | May 2017 There’s More to the New Safety Data Sheets than a Missing “M”

    Safety in the chemistry lab is a concern for all teachers, regardless of years of experience. In 2015, major changes occurred to chemical labels and SDS in the US, however, many people that work and teach with chemicals are still fuzzy on the details. This article aims to increase your comfort level with SDSs by describing the timeline, some changes over the last 5 years, pros/cons of the newer format, related hazard communication issues, and providing info on other available resources.

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    Nuts & Bolts | May 2017 Using Formative Assessment to Guide Instruction

    Formative assessment is a valuable tool for determining a student's misconceptions and level of science understanding, in order to guide class instruction. While it can seem intimidating, formative assessment can take a variety of forms to incorporate movement and collaboration in the classroom.

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    In My Element | May 2017 A Serendipitous Teaching Career

    The author recounts the events and influences, from childhood through retirement, that guided his successful teaching career.

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    Simulation | March 2017 Half-Life Investigation

    In the March 2017 simulation, students will have the opportunity to investigate the decay of two samples of unstable atoms. Students will interact with the simulation in order to decay the unstable samples resulting in a visual and graphical interpretation of half-life.

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    Classroom Commentary | March 2017 Bridging the Observable to the Atom: Teaching Chemistry to PreK-12 Students

    In order to support children’s understanding of matter throughout their primary and secondary education, it's necessary to design instruction using the tetrahedral model representations in which students recognize the multiple levels of thought and contextualize learning in the everyday level. This article aims to help teachers understand the learning progressions in light of the tetrahedral model representation through NGSS and other curriculum documents.