Mathematics - Number Sense - Counting - Skip counting by 2s, 5s, 10s - Hundred Chart Coloring

Show a hundred chart (1-100). Three buttons at top: 'Count by 2s', 'Count by 5s', 'Count by 10s'. When the student clicks 'Count by 2s', they click numbers in the chart one by one (2, 4, 6, 8...). Correct clicks highlight in blue with a pop sound. Wrong clicks shake. After completing the sequence, t