Pivot Interactives

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Chemistry with Video? Turns out, Yes.

 Our collection of magnesium in HCl videos allow students to vary the amount of Mg, vary the concentration of HCl, and measure both the amount of hydrogen gas and the rate of hydrogen gas production. This allows for multiple experimental paths that allow students to discover patterns and connections in their data.

Our collection of magnesium in HCl videos allow students to vary the amount of Mg, vary the concentration of HCl, and measure both the amount of hydrogen gas and the rate of hydrogen gas production. This allows for multiple experimental paths that allow students to discover patterns and connections in their data.

When we began working with interactive video, we imagined it would be best for physics. Now, as we launch our new chemistry content, we wonder whether interactive video is even better suited to chemistry than it is to physics. Here are the affordances of using interactive video for chemistry:

  • Quick data collection means students have time to focus on experimental design, analyzing data, and error analysis

  • Slow-motion and time-lapse show details that would be missed during real-time data collection

  • Interactive measurement tools can be more concrete, less black-boxy, than electronic data collection

  • Freedom from practical constraints means students can see dangerous, time-consuming, expensive experiments, and multiple trials.

  • Matrices of videos and tools mean students have freedom to create their own questions, and design experiments to answer them.

Here are some examples of using interactive video for chemistry topics:

 We have six different titration activities, from very basic introductions, to advanced analysis of weak and strong acid/base titrations and titration curves. These are an ideal way for students to learn and practice this essential skill.

We have six different titration activities, from very basic introductions, to advanced analysis of weak and strong acid/base titrations and titration curves. These are an ideal way for students to learn and practice this essential skill.

 Rather than rely on a reading from a colorimeter, our colorimetry videos let students perform precise visual measurements of the amount of light transmitted through solutions of various concentrations. Beer’s law is transformed from an abstract concept to a set of concrete observations.

Rather than rely on a reading from a colorimeter, our colorimetry videos let students perform precise visual measurements of the amount of light transmitted through solutions of various concentrations. Beer’s law is transformed from an abstract concept to a set of concrete observations.

 Our gas laws activities let students explore the behavior of ideal gases, and compare them with non-ideal gases. In the video shown, a volume of air is warmed from  —30°C to 35°C. Students decide what to measure and plot, and how to analyze their data.

Our gas laws activities let students explore the behavior of ideal gases, and compare them with non-ideal gases. In the video shown, a volume of air is warmed from
—30°C to 35°C. Students decide what to measure and plot, and how to analyze their data.


 Our thermochemistry activities provide opportunities to experimentally fine-tune apparatus, and identify unknown substances.

Our thermochemistry activities provide opportunities to experimentally fine-tune apparatus, and identify unknown substances.

 All our stoichiometry activities provide multiple trials and opportunities for students to reason through possible sources of error.

All our stoichiometry activities provide multiple trials and opportunities for students to reason through possible sources of error.

 Electrochemistry can be another abstract topic with labs that sometimes produce erratic measurements. Our electrochemistry activities are clear and yield results that will help students understand the processes that underlie these observations.

Electrochemistry can be another abstract topic with labs that sometimes produce erratic measurements. Our electrochemistry activities are clear and yield results that will help students understand the processes that underlie these observations.

We’re constantly adding new activities to our collection, each with the objective to allow students to make measurements and observations that provide evidence for underlying particle-level interactions.

Peter Bohacek