Tag: scale

  • Precision Versus Accuracy

    Precision Versus Accuracy

    I was in the market for a new digital scale, mainly for the osmosis experiment where students must weigh dialysis tubes. ¬†I found that my one digital scale just wasn’t enough for 20 students to gather data. ¬†Unfortunately, digital scales you buy from scientific suppliers are often very expensive and I really don’t need the…

  • What is “Mastery” and Why is It Important?

    What is “Mastery” and Why is It Important?

    Education leaders often talk about mastery. Here’s what it means to me and how I can assess whether students have mastered content.