1. Number Sort: excavate all the numbers and sort them in order.
2. Go Fish: With a magnet wand fish for the numbers. To keep the number you must correctly identify it or it gets tossed back into the bin.
3. Number Hunt: Seek the invisible numbers.
4. Find & Trace: Once a number is removed from the bin you must trace the number on the correct tracing card.
Hot Glue, Invisible Numbers via I Can Teach My Child