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