Teacher copy: This page may include teaching prompts or answer keys. Answer keys in this public library can be viewed by anyone. Give learners a clean prompt, use checks as formative evidence, and change a case locally when prior access matters.
Target: independently transfer nuclear-symbol, isotope and charge bookkeeping to new Files T/U. Both prompt and key are public. Prepare: new case, blank count mat and support log.
Launch · 2 min. State task: derive p/n/e twice, read status from the symbol, and explain one distinction and one limit.
Source access · 4 min. Release T/U without the key; record any reading/communication support.
Independent plan · 5 min. Learner marks left A/Z and right charge separately; calculates n = A − Z and electron change.
Independent response · 7 min. Choose Day 10 route; capture first work before feedback. More time can follow for instruction.
Self-audit · 4 min. Learner checks p+n=A and p−e=charge for each record; avoid any real safety inference.
Submit · 3 min. Retain first response/support record, then use public key for targeted next move. No QCAA unit grade follows.