Build a deck of bead-reading cards and print it. Pick how many rods and how many cards; the answers print underneath or on their own list.
Deck #4100. The same settings and number always produce the same deck, so you can reprint an identical set — or press New deck for different numbers at the same difficulty.
Reading a bead position as a number instantly, without counting the beads one by one, is the skill every later technique is built on. Cards drill it faster than a screen does because there is no interface between the child and the number. Nothing here is uploaded and no account is involved.