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  • Concept-Based Probes: The Justified List

    Journal Article | July 2021

  • Advancing Alloys

    Journal Article | April 2020

    The manufacture of metal alloys is ubiquitous, yet infrequently discussed in high school coursework as concepts related to them are often too complex or abstract for beginning science students. However, earlier…

  • Ice Cubes in a Bag

    Lesson Plan | August 2020

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter (or mass). The probe is designed to reveal whether students think matter (or mass) is conserved during a change in state.

  • Is It a Meteorite?

    Case Study | March 2018

  • Science That’s Out of This World

    Journal Article | June 2020

  • Lemonade

    Lesson Plan | August 2020

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter. The probe is designed to reveal whether students think matter is conserved when a substance is dissolved in a liquid.

  • Learning by (seeing) osmosis

    Journal Article | March 2020

  • Patterns, Puzzles, and the Periodic Table

    Journal Article | October 2019

  • Is It Matter?

    Lesson Plan | August 2020

    The purpose of this assessment probe is to elicit students’ ideas about matter. The probe is designed to reveal the characteristics students use to describe and define matter.

  • Cookie Crumbles

    Lesson Plan | August 2020

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter. The probe is designed to reveal whether students think weight is conserved when a whole object is broken up into small…

  • Seedlings in a Jar

    Lesson Plan | August 2020

    The purpose of this assessment probe is to elicit students’ ideas about conservation of matter in a closed system after a transformation of matter from seed to seedling has taken place. The probe is designed to reveal…

  • The Rusty Nails

    Lesson Plan | August 2020

    The purpose of this assessment probe is to elicit students’ ideas about a common phenomenon—rusting. The probe is designed to find out what students think happens to the mass of iron nails after a chemical change.

  • Chicken Eggs

    Lesson Plan | June 2021

    The purpose of this assessment probe is to elicit students’ ideas about food, transformation of matter, growth and development, conservation of mass, and systems. The concepts underlying this probe are complex. It is…

  • Freebies for Science Teachers, March 30, 2021

    Reports Article | March 2021

  • The Teaching of Climate Science

    Position Statement | June 2020

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