How it works
One more bead makes the number go up by one.
Slide one more bead across the row, then count: you get the next number.
Two beads and one more make three. Three and one more make four.
Worked examples
Two and one more
- Slide two beads across the frame.
- Slide one more bead across.
- Count them all: one, two, three.
- 2 + 1 = 3