By the end of the hour, the lab journals were filled with data. Mr. Petrov walked around, looking at their findings.
The students worked in pairs. Sasha and Denis cleared their desk. Their tools were simple but precise: A long measuring tape A flat wall without a baseboard A specialized "posture grid" taped to the door Their lab journals to record every centimeter "Stand against the wall, Denis," Sasha commanded. Step 1: The Five-Point Check laboratornaia rabota vyiavlenie narushenii osanki 8 klass
"You're missing your head and heels at the same time," Sasha noted, scribbling in her journal. "When you touch your heels, your head tilts forward. That’s a sign of 'forward head' posture from too much gaming." Step 2: Measuring the Curves By the end of the hour, the lab