I think you could also have multiple pipe cleaners coming from one number and students have to show multiple ways to add numbers to get to that number. Counting with pipe cleaners and beads. Great for fine motor development too.
“From an idea I'm sure I saw somewhere on here, but can't remember where, our Numicon Padlocks
COUNTING How to help children develop number sense and move beyond basic numeral recognition through mathematical best practices.
Lots of activities focusing on numbers in Early Years play from Rachel (",)