The Secret of Popcorn Popping

Case Study | April 2011

From the Field: Events and Opportunities, June 15, 2021

Reports Article | June 2021

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.

Is It a Rock? (Version 2)

Lesson Plan | December 2022

The purpose of this assessment probe is to elicit students’ ideas about an Earth material, rocks. The probe is designed to determine whether students can distinguish between humanmade, “rocklike” materials and…

Picture This!

Journal Article | November 2021

How to Remove Makeup

Case Study | March 2018

The Purple Pill

Case Study | March 2019

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.

Is It Made of Cells?

Lesson Plan | August 2020

The purpose of this assessment probe is to elicit students’ ideas about cells. The probe is designed to find out how students think about matter composed of cells.

What Are Clouds Made Of?

Lesson Plan | December 2022

The purpose of this assessment probe is to elicit students’ ideas about an everyday object in the sky: clouds. The probe is designed to determine whether students recognize that clouds are made up of tiny droplets of…

Should Bill Buy Sammy?

Case Study | December 1999

Avogadro Goes to Court

Case Study | August 1999

A Light Lunch?

Case Study | October 2010

Hall of Fame or Shame?

Case Study | January 2016

Why Homeostasis Is Important to Everyday Activities

Case Study | February 2018