Earning and spending
Track a complete exchange
A plan gives one token for each independently completed sorting tray. Five tokens buy three minutes with the marble run. A learner begins with two tokens and independently completes three trays, then requests the exchange.
Relevant facts
- Three qualifying trays earn three tokens.
- The backup activity costs five tokens.
The balance is five; complete the requested exchange according to the plan.
2 + 3 = 5 tokens; 5 − 5 = 0 after exchange
The learner has met both the earning and price rules. Requiring an extra tray now would change the contingency after the tokens were earned.
Unexpected problem
Use the backup arrangement for a supply issue
A learner earns four tokens, enough for the posted drawing activity. The markers are missing. The RBT considers doubling the price so the learner will keep working while someone searches.
Relevant facts
- The learner has already met the posted cost.
- Missing materials are a staff-side problem.
Seek the planned backup arrangement or supervisor direction while preserving the posted price.
Earned balance meets cost → exchange obligation remains
Reliable exchanges support the token system. Record and communicate the problem, using an approved equivalent option if the plan provides one.