Matching Pairs InventionsOnline version Based on the unit 7 Good Idea! of the book Our world 4! by Claudia Casanova 1 Imagination 2 A problem 3 Useful 4 A Wheel 5 Fail 6 Invention 7 Battery 8 Invent 9 A solution 10 Electricity 11 Try 12 Idea 13 Succed 14 Creativity