Comparing Possible Solutions
Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints
What a learner can do afterwards
- Generate at least three possible solutions to a defined design problem
- Compare solutions against the specified criteria and constraints
- Select the most promising solution with reasoning for the choice
1 · Read
When you have a problem to solve, don't grab the first idea that comes to mind. Think of at least three different solutions. Then compare them to see which one really fits what you need.
Kai wants to build a bridge for his toy cars. The goal is to hold as many cars as possible, using only ten craft sticks and tape. He tries three plans: a flat bridge holds 2 cars, an arched bridge holds 5, and a layered bridge holds 3. Kai compares the numbers against his goal and picks the arched bridge, since it holds the most cars while still fitting inside the ten-stick limit.
To compare solutions: list every idea, check each one against the criteria and constraints, then pick the one that fits best and be ready to say why.
Compare your solutions against the criteria and constraints, then choose the one that fits best and explain your reason.
More to read
7.5 Problem-Solving
Solving a problem is like going on a small adventure. Good problem solvers do not grab the very first idea that pops into their head. They follow a few simple steps.
First, figure out what the problem really is. Ask yourself: what do I need to make or fix, and what rules must I follow? The rules are called criteria and constraints. Criteria are the things a good solution must do. Constraints are the limits, like how much time, money, or stuff you are allowed to use.
Next, think of more than one way to solve it. Smart thinkers always come up with several ideas before they choose. Three ideas is a great start. The more ideas you have, the better your chances of finding a really good one.
Then, compare your ideas. Line each one up next to the rules and ask: does this idea do what it must do? Does it stay inside the limits? Some ideas will fail one rule. Some will pass them all.
Last, pick the idea that fits the rules best, and be ready to say why you picked it. Saying your reason out loud is part of being a good problem solver. If your first pick does not work when you try it, that is okay. You already have other ideas ready to test.
2 · Watch
به انگلیسیTake it off screen
Where it sits
Learn first
This opens up
Where this leads
13 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.