20 Arithmetic bead string red/blue - Wissner® aktiv lernen

Student Bead Strings - 20 Beads (Pack of 15)

Teacher Bead String - 100 Beads

Beadstrings Webinar

Student Bead Strings - 20 Beads (Pack of 15)

AFMT14084 - 100 Bead Strings - Teacher

AFMT14084 - 100 Bead Strings - Teacher

Rekenrek Bead String to 20, Number lines _ 36-9026

Rekenrek Bead String to 20, Number lines _ 36-9026

Handy Homework - Using a Number Bead String to make numbers, add and take away.