[{"title": "Basic Multiplication", "content": "Calculate 5 × 9. This means 5 groups of 9, or 9 added 5 times.", "solution": "5 × 9 = 45"}, {"title": "Distributive Property", "content": "Calculate 30 × 3 using the distributive property. Break 30 into 30 + 0: (30 × 3) + (0 × 3) = 90 + 0.", "solution": "30 × 3 = 90"}]