Halloween Maths Codebreaker Pack | Quadratics and Completing the Square

Turn quadratic roots and completing the square practice into two Halloween codebreakers. Pupils find both roots of quadratic equations and choose the letter that completes a warning, then complete the square to identify turning points. This pair adds meaningful algebra practice to a Halloween lesson.

Each topic is a one-page pupil activity with a full A–Z decoder and its own hidden message. Use the pair for a seasonal lesson, independent practice, homework or revision. Both answer keys are on page 2 of their respective PDFs, making checking and preparation straightforward.