What can you do to the same counters?
Drag the corner handle to change the rows and columns: the sentence under the array is written from your own counters, so every number in it changes as you drag. Press the turn handle to stand the same counters the other way round, and drag the dashed line to cut the array into two parts.
Question 1 of 10
Path level 1 / 4Correct on the first check without a clue counts as an independent success for this practice route.
Set complete
You checked 10 different questions on this board: which law an arrangement shows, what a turn or a split does to the count, which pair to work out first, and what an expression comes to under the order convention.
Your question history stays with this pathway. Start another set when you are ready, or build arrangements in Challenge.
Mission 1 of 6
Drag the corner, the dashed line or the hoop, or press the turn handle — whatever the mission says can change. The readout under the board tells you what your arrangement currently claims.
Practice and challenge checks record the selected pathway and response in this page session. Explore changes are not scored.