Crack Santa’s secret codes with algebraic thinking! This 10-page, black-and-white worksheet pack turns holiday emojis into unknowns students must deduce using balanced equations, patterns, function rules, and multi-step reasoning. Each page includes 10 puzzles, one line-art illustration prompt, and a tight focus on Grade 4 pre-algebra skills (variables as unknowns, equality, order of operations in simple contexts, function tables, and logical deduction). Perfect for December math centers, e