Classroom tools
Rekenrek
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Drag a bead to slide it along. It pushes any beads in its way. Tap a bead to send it, and the beads beside it, across in one go. Beads on the left-hand side are counted.
About this online rekenrek
A rekenrek (also called a bead frame or arithmetic rack) helps children see numbers in fives and tens. This free online rekenrek works on interactive whiteboards, laptops and tablets. Drag or tap beads to build numbers, use one, two or ten rows, hide the totals, or flash the beads for two seconds to practise quick recognition.