Investigate: Atoms and Elements

Kavi pours a jar of coloured beads onto the bench 🔵🔴. "These beads are my model of atoms," hoots Kavi. "All-blue beads model one element; blue and red beads joined together model a compound — more than one element. Today I'll investigate a model by measuring it — and here is the scientist's secret: I never trust just one reading. I measure again and again, add my readings and divide to find the average, then draw only the conclusion my data supports. Let's measure like real scientists!"