Day 3's objective was for students to learn metric conversions. The homework assigned was problems on page 20. The warm-up asked about two lab safety rules. Students then worked on metric conversion problems by labeling conversion steps from kilo to milli for grams, liters, and meters using a stair diagram. They used a mnemonic to remember the order and worked through problems by finding decimals, counting steps left or right, and moving the decimal to get the correct answers.