← Numeracy
2.5 Numeracy
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Draw a SINE wave ONE OCTAVE LOWER

Sine → Sine (1 Octave Lower) — 4 cycles → 2 cycles

Keyboard users: press Show Answer to see the correct waveform.

Same shape, but period doubles → half as many cycles (4→2).

What you learned

  • ✓Understand how octave changes affect cycle count in a waveform
  • ✓Practice drawing sine, square, sawtooth and triangle waveforms
  • ✓Visualise the relationship between pitch direction and waveform period
  • ✓Build confidence before attempting assessed drawing activities
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