Counting Counters

🔢 Default Array of 10s:

• Counters automatically order in clean arrays of 10 counters per row with a subitizing gap between the 5th and 6th counters.
• Click Arrange (Array of 10s) at any time to instantly organize scattered counters into groups of tens.

🎯 General Controls:

• Click ➕ Add Counter or ➕ Add 10 to quickly build large sets.
• Click & Drag single counters or draw a marquee box to multi-select.
• Double-click a counter to flip it over (Two-Color counters).