"A complete Level 20 pack containing all twenty parallel versions of What Number Am I? — Expert deduction. Each version contains twenty different, solver-validated number-deduction puzzles, giving 400 puzzles at this level.
Level focus: Larger or less obvious domains with several interacting constraints.
Included: 20 editable PowerPoints, 20 full-page PDFs, 20 condensed PDFs and complete answer explanations. Every PDF also contains the product guide, highlighted level ladder, reusable 1–100 grids and product overview.
Ideal when the same difficulty is needed repeatedly for starters, homework, tutoring, intervention, revision or differentiated practice. This product is supplied in multiple ZIP parts; download every part."
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£9.99