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