Other forms: strategizing; strategized; strategizes
When you work on a plan with the aim of achieving a goal, you strategize. If you don't strategize before the big debate, you'll probably be unprepared and unconvincing.
You and your sister should strategize before presenting your proposal for higher allowances to your mom. That means you'll come up with a game plan to achieve your goal: convincing her that ten dollars a week makes sense. Chess players strategize too, studying the board for possible moves and planning ahead to ultimately put their opponent's king in check mate. Strategize and strategy were first used as military terminology, from a root meaning "military commander."