LO2: Four operations of complex numbers

Open index.html for local preview, or upload the ZIP in this folder to SLS as an interactive resource.
The activity contains six progressive stages, touch/keyboard access, read-aloud, misconception-specific remediation, and teacher learning evidence.
Numeric response stages use a locally bundled MathLive mathematical editor. Learners may enter exact fractions, roots, powers, pi, or decimals; no internet connection is required.
The proven xAPI libraries and injected xAPI head block are copied byte-for-byte from the supplied reference ZIP.
