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  • Science Sampler: Conservation of mass and an unsuspected buoyancy effect

    Journal Article | July 2008

    Over the years, many interesting chemical reactions and activities have been used to illustrate the conservation of mass. The reaction of baking soda and vinegar is a common example. The experimental procedure described…

  • Arguing About a Chemical Change

    Journal Article | November 2019

    of how the molecules interact and recombine during the chemical reaction … Table 1) highlights key components of ACT-type questions …

  • Understanding Chemical and Physical Changes

    Journal Article | February 2020

  • Arguing About a Chemical Change

    Journal Article | February 2020

    While argumentative writing may take time to master, the skills developed … is conserved during a chemical reaction” (NGSS Lead States 2013; See NGSS table … that mass is conserved in a chemical reaction. The lesson includes a writing …

  • Why Does Water Swirl When it Goes Down a Drain?

    Journal Article | February 2019

    of three quantities: the mass of the object, the size of the object … ’t yet learned about mass, feel free to say “amount of matter” or “amount … momentum stays the same, that means the product mass × size …

  • Emphasizing Physics Concepts with Cartoons

    Journal Article | February 2020

    Another important distinction is between mass and weight. Mass … mg) that slowed the ball still acts on the ball. Likewise, its mass remains the same … And what is the ratio of force to mass? Isn’t that acceleration as per Newton …

  • Atoms and matter

    Journal Article | March 2020

    a mass. In the left column, I asked students to make a list of things … that do not take up space and have no mass. Differentiation strategies included … identify everyday objects that have mass and take up space. However, many …

  • Call for Papers: Science Scope

    Page | January 2020

    the grade bands … No matter how good we are at teaching to the standards, central to the success … among the energy transferred, the type of matter, the mass, and the change …

  • Combustion and a Jumping Flame

    Journal Article | May 2020

    can be confusing, from the conservation of mass to whether the wax in a candle … et al. 1994/2015). (Note: Einstein showed us that mass is not perfectly conserved … However, mass is close enough to being conserved that our measuring devices …

  • Emphasizing Physics Concepts With Cartoons, Part II

    Journal Article | March 2020

    an electric field. Just as a gravitational field surrounds an object with mass … the wider view is that energy and mass are two sides of the same coin … The relationship between energy and mass encompasses all energy transfers …

  • Supporting Students In Writing Scientific Explanations

    Journal Article | March 2020

    school students understand chemical reactions and conservation of mass …

  • Online Connections: Science Scope

    Page | January 2020

    notes April … April/May 2019 Teacher to Teacher … key April/May 2018 What Kind of Person …

  • Shell Science Lab Regional Challenge Testimonials

    Page | March 2020

    and resources of locality. For example, Louisiana is rich in biomass mass …

  • A Water Wheel Challenge!

    Journal Article | February 2019

    with the matter around them. Interactions with forces and energy can range from … CCC). Energy and matter is one of these central themes in science and engineering … which fits within the 3–5 grade NGSS ETS standard) allows …

  • Free Exhibitor Resources

    Page | April 2020

    Free Exhibitor Resources NSTA has invited our conference exhibitor community to tell us about free online resources they are offering to help teachers and others deal with the challenges presented by the COVID-19 pandemic. The resources on this page have not been reviewed by NSTA. Each listing includes the targeted…

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