Algorithms in Programs
👩🏫 Teacher’s Guide
Objective
Students will define an algorithm as a step-by-step plan and identify that programs use algorithms to solve problems efficiently.
Teaching Notes
- Use everyday algorithms: making a sandwich, brushing teeth, lining up.
- Explain that an algorithm must be clear, ordered, and repeatable.
- Introduce the idea of efficiency: fewer steps can be better.
- Connect to coding: algorithms become code instructions.
🧒 Student Worksheet
Concept and Helping Material
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An algorithm is a step-by-step plan to solve a problem. Programs use algorithms to decide what steps to take. Good algorithms are clear and can be repeated to get the same result.
Computer Vocabulary and Definition
- — A step-by-step plan to solve a problem.
- — Steps in a specific order.
- — Doing a task with fewer steps or less time.
- — A set of steps for a task.
- — A diagram that shows steps and decisions.
Computer QA
- What is an algorithm?
- What does sequence mean?
- What does efficiency mean?
- What is a procedure?
- What is a flowchart?
- True or False: An algorithm must be in order.
- Name an everyday algorithm.
- Why do programs need algorithms?
- What is one example of an algorithm in a game?
- Can one problem have more than one algorithm?
- Which is more efficient: 3 steps or 10 steps (same result)?
- True or False: Algorithms always use computers.
- What happens if steps are missing?
- What tool can show an algorithm as a diagram?
- What is one example of a decision in an algorithm?
- Do algorithms help solve problems?
- Can algorithms be repeated?
- What is one benefit of clear algorithms?
- True or False: Code is based on algorithms.
- What is one place you use algorithms online?
Computer Prtactices
- Write an algorithm: 6 steps to make a simple paper airplane.
- Flowchart practice: Draw a flowchart for ‘If hungry, eat; else, drink water.’
- Efficiency challenge: Improve a 10-step algorithm into 6 steps without changing the result.
- Algorithm test: Swap steps in your algorithm and see what breaks (discussion).
Reflection
- Why are algorithms important in programming?
- How can you make an algorithm better?