Ordering numbers up to 1 million by comparing digits from left to right.
A blackboard illustration showing the process of ordering numbers up to 1 million, with four 6-digit numbers (A: 743,528, B: 744,647, C: 743,887, D: 744,583) being compared digit by digit, highlighting the hundred thousands, ten thousands, and thousands places, and a column on the right for arranging them from smallest to largest.