Resources and Articles from Accel Thinking

What Does the CCC Actually Test?

A parent-friendly guide to what the CCC actually tests: reading, modeling, implementation, debugging, and algorithmic thinking.

What Is the Difference Between append() and + in Python Lists?

Understand when append() changes a list, when + creates a new list, and why that matters in Python code.

Understand Python String Slicing in One Minute

A beginner-friendly Python note on word[1:4], include start, exclude stop, and slicing boundaries.

Do Informatics Competitions Still Matter in the AI Era?

A parent-friendly guide to what informatics competitions still train when AI can generate code, hints, tests, and explanations.

CCC 2020 J5/S2 Escape Room Solution: BFS on an Implicit Graph

Learn how to solve Escape Room with BFS on an implicit graph, product-to-cells indexing, and visited-value optimization in Python and C++.

What Skills Should Students Build in the AI Era?

A parent-friendly guide to durable student skills in the AI era, from problem definition to verification and communication.

What Is the Difference Between = and == in Python?

A beginner-friendly Python note explaining assignment, equality comparison, and how to write correct if conditions.

CCC 2021 J5/S2 Modern Art Solution: Count Gold Cells with Parity

Learn how parity, row toggles, and column toggles make CCC 2021 J5/S2 Modern Art much easier to count.

Why Python Is Still a Strong First Programming Language in the AI Era

Why Python still works as a strong first programming language for students learning in the AI era.

Variables Are Not Boxes; They Are More Like Labels

A clear mental model for Python variables: names point to values like labels, not boxes holding objects.

print() Is More Than Hello World

Go beyond hello world by learning how print(), sep, and end shape Python output.

CCC 2025 J4 Sunny Days Solution: Longest Sunny Streak After One Fix

Use prefix thinking to find the longest sunny streak after changing at most one rainy day.

Are Python, Algorithms, and AI Competing Choices?

Why Python, algorithms, and AI literacy reinforce one another instead of competing for student attention.

Python Readability: Why Clear Code Beats Clever Code

Learn why clear Python code is easier to debug, review, and improve than clever-looking code.

Which Python IDE Should Teen Learners Use? A Stage-by-Stage Guide

A stage-by-stage guide to choosing a Python IDE for teen learners and AI-assisted coding.

Do Not Memorize Python Syntax First

A practical note on learning Python through meaning, examples, and debugging before memorizing syntax.

CCC 2022 J5 – Square Pool Solution & Analysis

Solve CCC 2022 J5/S2 Square Pool by reasoning about blocked trees and the largest possible square.

How Should Teens Choose an AI Coding Tool? Codex, Copilot, and Chinese Alternatives

Compare AI coding tools for teens, including Codex, Copilot, and Chinese alternatives, with learning goals in mind.

AI-Assisted Python Learning: How Kids Can Ask Better Questions

Help students ask AI better Python questions while keeping their own reasoning at the center.

CCC 2023 J5 – Word Hunt Solution & Analysis

Use grid search and direction handling to solve CCC 2023 J5/S2 Word Hunt systematically.

Python Syntax Basics: Input, Operators, and Conditions

A beginner-friendly Python note on reading input, converting values, using operators, and writing clear if statements.

CCC 2025 J5 – Connecting Territories Solution & Analysis

Use dynamic programming, local transitions, and rolling arrays to solve CCC 2025 J5/S2 efficiently.

Why Turing Award Winner Richard Sutton Is Skeptical of the ChatGPT Path

Richard Sutton’s critique of the ChatGPT path is a useful reminder to teach AI as reasoning, not magic answers.