Choral counting with decimals, and why crossing one whole matters

Counting by tenths or hundredths uses the same never-erase choral counting routine as every other count track here, and starting from any number, not just zero, matters just as much with decimals as it does with whole numbers. Decimals carry a misconception whole-number counting never surfaces: kids judging 0.45 as bigger than 0.8 because 45 has more digits than 8, the same "longer is larger" logic that works fine for whole numbers and breaks completely here. Watch the count move steadily through 0.7, 0.8, 0.9, 1.0, 1.1. The tenths tick up one at a time, then the value sails straight through a whole number and keeps growing, even though 1.0 "has fewer digits" than 0.9. This tool stops at hundredths on purpose. That's plenty of room to work the misconception, and most K to 3 classrooms aren't counting in thousandths yet anyway.