Problem Solving Course Overview
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Questions and Answers

What is the central theme of Module 2 in the course?

The central theme of Module 2 is the role of algorithms in problem solving.

What are the three units covered in Module 1?

The three units in Module 1 are Roadmap to Solving Problems, The Problem Solving Process, and Computational Approaches to Problem Solving.

How does Module 3 contribute to the course on problem solving?

Module 3 focuses on implementation strategies, including recursion, control structures, and testing and debugging.

What role do flowcharts play in problem-solving as discussed in the course?

<p>Flowcharts serve as a graphical representation of the steps involved in an algorithm, aiding in visual understanding.</p> Signup and view all the answers

Identify a computational approach to problem solving mentioned in Module 1.

<p>Computational approaches discussed include various strategies for solving common real-life problems.</p> Signup and view all the answers

What is emphasized about abstraction in Module 2?

<p>Abstraction is emphasized as a logical representation of ideas that aids in problem solving.</p> Signup and view all the answers

What should learners do to gauge their knowledge effectively throughout the course?

<p>Learners should avail themselves of opportunities to compare their knowledge with that of others.</p> Signup and view all the answers

What is one key strategy discussed in Module 1 for solving problems?

<p>One key strategy discussed is the use of typical problem-solving techniques, such as brainstorming ideas.</p> Signup and view all the answers

What is the primary concept behind recursive solutions?

<p>Recursive solutions involve breaking down a problem into smaller sub-problems that follow the same solving procedures.</p> Signup and view all the answers

How does a non-recursive solution differ in approach when solving problems?

<p>Non-recursive solutions identify regularities in problem-solving procedures rather than breaking the problem down into smaller sub-problems.</p> Signup and view all the answers

What characterizes the movement of disks in the Tower of Hanoi during the odd moves?

<p>In odd moves, the smallest disk is involved, and its movements give insight into the placement of other disks.</p> Signup and view all the answers

How is binary notation applied in the context of disk moves in the Tower of Hanoi?

<p>Binary notation assigns a bit to each disk, where the leftmost bit indicates the largest disk's position.</p> Signup and view all the answers

What is the significance of graphical representations in solving problems like the Tower of Hanoi?

<p>Graphical representations visually model conditions and simplify the understanding of complex solutions.</p> Signup and view all the answers

How can past experience aid in problem-solving?

<p>Reflecting on past experiences helps identify previously effective strategies and adapt them to current problems.</p> Signup and view all the answers

What is the key advantage of using a pyramid-shaped graph to represent the Tower of Hanoi?

<p>A pyramid-shaped graph clearly displays different disk distributions and the legal moves between them.</p> Signup and view all the answers

What are the four conditions that define a problem?

<p>The four conditions are: initial situation, goal, applicable set of resources, and commitment to using one's resources.</p> Signup and view all the answers

In the context of problem-solving, what does it mean for moves to be 'legal'?

<p>Legal moves adhere to the specific rules governing how disks can be moved between pegs without violating any established constraints.</p> Signup and view all the answers

How is a problem defined if one or more of its components are missing?

<p>If one or more components are missing, the problem is considered ill-defined.</p> Signup and view all the answers

What does the term 'goal' refer to in the context of problem solving?

<p>In problem solving, 'goal' refers to the desired outcome that one aims to achieve.</p> Signup and view all the answers

What role do 'resources' play in achieving a goal during problem solving?

<p>Resources provide the necessary means or tools that assist in transitioning from the initial situation to the desired goal.</p> Signup and view all the answers

Define critical thinking as described in the course guide.

<p>Critical thinking involves cognitive skills or strategies that enhance the likelihood of achieving a desirable outcome.</p> Signup and view all the answers

What may limit the use of resources when solving a problem?

<p>Limitations may include rules, regulations, and guidelines that dictate permissible actions.</p> Signup and view all the answers

What is implied by 'commitment to using one's resources' in problem-solving?

<p>It implies a willingness to invest personal knowledge, skills, and energy towards achieving the goal.</p> Signup and view all the answers

In what way does identifying an initial situation assist in problem solving?

<p>Identifying the initial situation provides a clear starting point from which to assess needs and devise strategies.</p> Signup and view all the answers

What are the key stages in the problem-solving process?

<p>Identifying the problem, determining its root causes, deciding on a course of action, and implementing the solution.</p> Signup and view all the answers

Why is choosing the correct problem-solving technique important?

<p>The right technique influences the effectiveness of the solution and is dependent on the individual's experience and resourcefulness.</p> Signup and view all the answers

Name two problem-solving techniques mentioned in the content.

<p>Trial and error, and algorithms.</p> Signup and view all the answers

How does resourcefulness affect problem-solving?

<p>Resourcefulness allows individuals to adapt and select appropriate techniques based on the situation.</p> Signup and view all the answers

What is the purpose of algorithms in problem-solving?

<p>Algorithms provide systematic procedures for solving problems efficiently.</p> Signup and view all the answers

Explain the term 'means-ends-analysis' in the context of problem-solving.

<p>Means-ends-analysis is a technique that involves breaking down a problem into smaller, manageable parts to find solutions.</p> Signup and view all the answers

What role does experience play in selecting problem-solving techniques?

<p>Experience informs individuals about which techniques have been successful in similar situations.</p> Signup and view all the answers

Describe how trial and error functions as a problem-solving strategy.

<p>Trial and error involves trying various solutions to see which one works and learning from failed attempts.</p> Signup and view all the answers

What is the main goal of every problem-solving approach according to the module?

<p>The main goal is to produce an efficient solution.</p> Signup and view all the answers

List two implementation strategies covered in the module.

<p>Recursion and modularisation.</p> Signup and view all the answers

What is the purpose of the exercises included in each unit?

<p>They test learners on the materials covered and help reinforce their understanding.</p> Signup and view all the answers

What percentage of the total course mark does the tutor-marked assignments count for?

<p>30%.</p> Signup and view all the answers

What are learners advised to do to avoid falling behind in their course schedule?

<p>Submit all assignments by the stipulated time and date.</p> Signup and view all the answers

What are the three aspects of course assessment mentioned in the module?

<p>Self-assessment exercises, tutor-marked assignments, and written examination.</p> Signup and view all the answers

Why is program testing and debugging emphasized in the module?

<p>To ensure that the presented solution not only works but is guaranteed to work.</p> Signup and view all the answers

How long is the end-of-course examination, as stated in the module?

<p>About three hours.</p> Signup and view all the answers

What types of formats might grades be represented in?

<p>Grades can be represented as whole numbers, real numbers (like 73.42), or letter grades (like A to F).</p> Signup and view all the answers

What consideration should be made for students who were absent during a test?

<p>We need to decide whether to include the absent students as having received a grade of 0 or to ignore them when calculating the average.</p> Signup and view all the answers

What is the computational model for calculating the average of integer or real number grades?

<p>The model is given by the formula $Average_1 = \frac{x_1 + x_2 + x_3 + ... + x_n}{n}$, where $n$ is the number of grades.</p> Signup and view all the answers

Why can the method of averaging not be directly used for letter grades?

<p>Because addition and division cannot be performed on letter grades as they are non-numerical.</p> Signup and view all the answers

What output formats might be appropriate for presenting average grades?

<p>Outputs could be presented as whole numbers, real numbers, or graphical formats like a pie chart.</p> Signup and view all the answers

What is crucial to understand in order to formulate a suitable model for computing averages?

<p>It is crucial to fully understand the type and format of the available input data.</p> Signup and view all the answers

What challenge does the inclusion of letter grades present in average calculations?

<p>The challenge is that a defined method for converting letter grades into a numerical format is necessary for computations.</p> Signup and view all the answers

Before solving a problem involving grades, what initial questions should be addressed?

<p>One should consider the format of the grades, any missing data, and what output is expected.</p> Signup and view all the answers

Flashcards

Problem Solving Strategies

Methods and approaches used to solve problems, often including typical strategies and computational methods.

Computational Approaches

Methods used in computer science to solve problems, often focusing on algorithms and logical processes.

Algorithms

Step-by-step procedures for solving problems.

Abstraction

Simplification of a problem by focusing on key elements and ignoring details.

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Flowcharts

Graphical representations of algorithms using boxes and arrows.

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Pseudocode

A plain language description of the steps in an algorithm.

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Recursion

Solving a problem by breaking it down into smaller, self-similar subproblems.

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Implementation Strategies

Methods for carrying out (coding/programming) a solution to a problem.

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Problem Definition

A problem is a situation where achieving a goal isn't immediately obvious. It needs a clear initial state, a desired outcome, and available resources and limitations.

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Initial Situation

The starting point of a problem-solving process. It's the current state before any actions are taken.

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Goal

The desired outcome of a problem-solving task.

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Resources

Tools available for moving from the initial situation to the goal. This can include knowledge, skills, or materials.

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Limitations

Restrictions on the resources that can be used to solve a problem. These include rules, guidelines, or limitations on what actions are allowed.

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Ill-defined problem

A problem that lacks one or more of the components needed for a well-defined problem (initial situation, goal, resources, or commitment).

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Critical Thinking

Using cognitive skills to improve the probability of a successful outcome while solving a problem.

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Problem Solving

The process of using one's resources to move from the initial situation to the goal, considering limitations and restrictions.

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Problem Solving Approach

A method for finding efficient solutions to problems.

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Program Testing and Debugging

Making sure a program works correctly including finding and fixing errors.

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Self-Assessment Exercises

Exercises to check understanding before formal assessment.

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Tutor-Marked Assignments (TMAs)

Assignments assessed by a tutor, contributing to course grade.

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Course Assessment

Evaluating student achievement in a course.

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End-of-Course Examination

Final exam completed at the conclusion of a course.

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Course Schedule

Important dates for submitting assessments and attending tutorials.

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Problem-solving process

A systematic approach to identifying, analyzing, and resolving problems.

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Problem-solving techniques

Methods for tackling problems, varying from trial and error to complex strategies.

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Trial and Error

A problem-solving method involving trying different solutions until one works.

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Heuristics

General problem-solving rules of thumb.

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Means-ends analysis

A problem-solving technique focusing on closing the gap between the current and desired states.

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Abstraction (problem solving tool)

Simplifying complex problems by focusing on key elements.

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Recursive Solutions

Breaking down a problem into smaller, identical subproblems, then combining their solutions for the final answer.

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Non-Recursive Solutions

Solving a problem using regular patterns and identifying consistent procedures for each step.

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Binary and Gray Solutions

Representing disk moves in the Tower of Hanoi puzzle using binary numbers, where each digit corresponds to a disk.

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Graphical Representation

Visually representing a problem's solution using a diagram, showing nodes (problem states) and edges (moves).

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Tower of Hanoi Graph

A pyramid-shaped graph representing the possible moves in the Tower of Hanoi problem, where each node shows a disk arrangement.

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Past Experience

Using previous knowledge and past solutions to address a new problem.

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Connecting Past and Present

Drawing connections between past experiences and current problems to find solutions.

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Data Representation

Understanding what the data means and how it's structured. For example, are the grades numbers, letters, or a combination? What do the numbers or letters represent?

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Data Format

Determining the specific format of the data, such as whole numbers, decimal numbers, letter grades, or a special code. This allows for correct processing.

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Missing Data

Considering whether there are gaps in the data, such as missing grades. This affects how you calculate the average.

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Output Information

Deciding what information needs to be produced as the result of solving the problem. For example, do you need a simple average, a chart, or a text report?

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Output Format

Deciding the best way to present the results, whether it is text, a picture, or a specific type of graph. This helps communicate the findings effectively.

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Computational Model

A formula or set of steps used to solve the problem. It needs to match the data format and account for missing data.

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Average Calculation

The process of computing the average of a set of numbers. This involves adding up all the numbers and dividing by the total count.

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Letter Grade Conversion

Converting letter grades (like A, B, C) to numerical values for calculations. This requires establishing a system for assigning numerical equivalents to the letter grades.

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Study Notes

Course Guide

  • CIT108 Problem Solving Strategies
  • Course Team: Dr. Tola, Dr. John Odule (Developer/Writer), Professor Julius Olatunji Okesola (Content Editor), Dr. Francis B. Osang (HOD/Internal Quality Control Expert).

Additional Information

  • National Open University of Nigeria
  • University Village, Plot 91
  • Jabi Cadastral Zone
  • Nnamdi Azikiwe Expressway
  • Jabi, Abuja
  • Lagos Office: 14/16 Ahmadu Bello Way, Victoria Island, Lagos
  • Email: [email protected]; [email protected]
  • URL: www.nou.edu.ng
  • First Printed 2022
  • ISBN: 978-058-557-5
  • Printed by: NOUN PRESS
  • January 2022

Contents

  • Introduction (page iv)
  • Course Aim (page v)
  • Course Objectives (page v)
  • Working through this course (page vii)
  • Study Units (page vii)
  • Presentation Schedule (page viii)
  • Assessment (page ix)
  • Tutor-Marked Assignment (TMAs) (page ix)
  • Final Examination and Grading (page ix)
  • Course Marking Scheme (page x)
  • Facilitators/Tutors and Tutorials (page x)
  • Summary (page xi)

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Description

This quiz explores key concepts from the problem-solving course, including the central themes of various modules, the role of flowcharts, and the application of recursive and non-recursive solutions. Dive into the significance of graphical representations and computational approaches as we unpack critical strategies for effective problem-solving.

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