Rekenreks

We did a STEM activity in math this week.  The students had to create a rekenrek with 2 rows of 10 beads each and it had to be 4x6 or smaller.  Unlike abucuses that are just rows of ten, rekenreks have rows of ten but each row has a divider that breaks it up by 5's.  Here are a few samples of what was created.

I loved seeing how each child thought it should look.  

We then used them to help us add using tens.