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9th grade
Computer Science Essentials
Open courseNew this week10th grade
Computer Science Principles
Open courseNew this week11th grade
Computer Science A
Open courseNew this week12th grade
College and Career Readiness
Open courseNew this weekTSA · 2026–27 season
Competition Preparation
Explore eventsNew this weekCareer readiness
ASVAB Practice
Start practicingNew this weekFor Families
In Mr. Babb's classes, students learn computer science and the skills that open doors — coding, problem-solving, and real career pathways. Everything your student needs is one tap away, so you can see what they're working on anytime.
About Mr. Babb
Michael K.J. Babb is a computer science educator and CTE leader who helps students turn what they're curious about into real skills, portfolios, and pathways. He also founded PI Tech Network, a student-run tech newsroom.
Learn more at mrbabb.com →Find a lesson
Computer Science Essentials CSE
Unit 1 — Creative Computing: Building with Blocks
The Layoff Wave — Watch & Reflect
Watch a report on tech layoffs, capture evidence, reflect on career choices and durable skills, and copy your responses for Google Classroom.
Open activity → 💡You Already Know This
Sort everyday examples into the four ideas behind computer science and see how much computational thinking you already use.
Open activity → 💻Name That App
Identify the parts of an app and connect what users see to the ideas and components that make it work.
Open activity → 🚀Ship It or Fix It
Inspect a student app, decide what is ready to ship, and practice spotting the problems a developer should fix first.
Open activity → 🧩Block-based Programming: Digital Doodle
Drag components onto a phone in the Designer, snap event handlers together in the Blocks view, and watch a simulated companion actually run the code you built.
Open lesson → 🔒The Locked Prototype
Five locks, one timer, one device passcode. Sort the Palette drawers, trace the event chain, wire up DrawLine, and find the block in the wrong handler.
Play → 🔒CSE Challenge Quest
Eight challenges on Designer vs Blocks, event handlers, properties and methods, scope, and reading blocks. About 30 minutes, 160 points, submit your score at the end.
Play → 🎮CSE App Arcade
Twelve timed rounds covering day one through Happy Accelerometer. Review programming patterns and App Inventor, build scoring streaks, and get a completion code to submit your score.
Play → 🎮Build Your Own Game
Choose one of five App Inventor games for a five-day project. Find your difficulty level, write your plan, build the must-haves, and prepare your demo.
Open project → 🛠Game Build Guides
Step-by-step Designer and Blocks instructions for Mole Mash, Catch It!, Rock Paper Scissors, Guess My Number, and Tic-Tac-Toe, with tests and troubleshooting.
Open guides → 💡CSE 1.1.2 — Do Now
Warm-up game for Activity 1.1.2.
Open warm-up → (new tab) 📱CSE 1.1.2 — Happy Accelerometer
The Happy Accelerometer lesson for Activity 1.1.2.
Open lesson → (new tab) 🔊Sound Check
Hear the edge sounds, try Happy Balance, build a chained conditional, and plan sound for your game. Copy your results before closing.
Open activity → 👁Who Can See It?
Sort local and global variables, explore same-name variables, make a prediction, and connect variable scope to your own game. Copy your answers before closing.
Open activity →Computer Science Principles CSP
Unit 1 — Algorithms, Programming, and the Internet
The Layoff Wave — Watch & Reflect
Watch a report on tech layoffs, capture evidence, reflect on career choices and durable skills, and copy your responses for Google Classroom.
Open activity → 🤖Algorithmic Thinking
Robot Chef sequencing, the four ways to represent an algorithm, a working Python turtle simulator, and five auto-checked shape missions.
Open lesson → 🔒Escape the Algorithm Lab
Five locks, one timer, one vault code. Predict the turtle drawing, hunt the bug, and sequence algorithmic thinking.
Play → 🔧Planning a Picture — Do Now
Laptop check for Thursday, trace three turtle commands, and make two predictions the lesson will answer.
Open → 🖼️Planning a Picture
input() and print(), the string-vs-number crash, a live Arc Lab for circle(radius, extent, steps), fill order, and objects vs. methods.
Open lesson → 🔒Escape the Render Room
Six locks: triage the type, diagnose the crash, decode the arcs, order the fill, name every part, and read the whole render.
Play → 🌼Fun with Flowers
Explore Python for loops, range(), and modulo with interactive shape and flower labs, quick checks, and an eight-question exit ticket.
Open lesson → 🚀Vocabulary Launchpad
Review familiar vocabulary, spot it in code, explore the turtle toolbox, and learn new terms before a seven-question launch check for Spinning with Spirographs.
Open lesson → 🔒CSP Challenge Quest
Five challenges on algorithms, data types, reading Python, turtle commands, and circle arcs. About 20 minutes, 100 points, submit your score at the end.
Play → 📚CSP Vocabulary Arena
Five rounds of vocabulary matching, code reading, data-type sorting, and a timed true-or-false challenge. Earn up to 100 points and copy your results at the end.
Play → 🧰Turtle Arcade — Game Day Do Now
Six-step VS Code readiness check, paste your Python version, and five warm-up questions before the build.
Open → 🎮Turtle Arcade
Build a playable click-the-target game in VS Code — five levels, a boss, and a 24-point Pre-Flight Check on your code.
Open → ❄️Escape the Algorithm Lab: Level 2
A second set of algorithm challenges: trace loops, find bugs, calculate turns, and earn a new lab escape code.
Play → 🌐The Internet and the Web
Send a real message through a packet-routing simulator, cut the cables and watch it reroute, trace a DNS lookup, and draft the Explore Task.
Open lesson →Computer Science A CSA
Unit 1 — Java Coding Fundamentals
Foundations, warm-ups, and review
The Layoff Wave — Watch & Reflect
Watch a report on tech layoffs, capture evidence, reflect on career choices and durable skills, and copy your responses for Google Classroom.
Open activity → 💡You Already Think Like a Programmer
Sequence instructions, spot a literal-minded robot, find a hidden character mismatch, and start thinking like a Java programmer.
Open activity → ☕Getting Started with Java
Vocabulary flashcards, the anatomy of a Java program, four bugs to debug, and the Print Lab smiley challenge.
Open lesson → 🔒Escape the Syntax Vault
Five locks: predict the output, find the missing semicolon, decode the vocabulary, and master escape sequences.
Play → 📦Variables and Data Types
Sort the data types, rule on legal variable names in Name Court, play Compile or Crash, and finish the Allowance Mission.
Open lesson → 🧮Java Does Math Differently
Warm up with integer division, remainder, order of operations, and the parts of a Java line that never execute.
Open activity → 📝Expressions & Assignment Statements
Work through Java comments, arithmetic expressions, division, modulo, assignment, and a checked exit ticket.
Open lesson → 🔒Escape the Precedence Vault
Unlock five Java arithmetic locks by predicting integer division, remainder, precedence, parentheses, and runtime failure.
Play → ⚡CSA Vocab Arena
Review Unit 1 vocabulary from comments to casting in 15 timed rounds. Match terms, decode real code, and build scoring streaks.
Play → 📚CSA Vocab Drills
Master all 45 Unit 1 terms, then enter your Classroom name to get your completion code. Finish in one sitting.
Start drills → 🔒Code Clash: Unit 1 Team Battle
Compete in squads through vocabulary, output duels, two Java build missions, and a final wager. Teacher-led play with a live scoreboard.
Play → ☕Code Java on Replit
Set up Java in your browser, run your first program, troubleshoot common errors, and get ready for Console Quest.
Open → 🕹Console Quest
One Java program built five levels deep — title screen, stats, gamertag, battle math, loot roll — with a Pre-Flight Check that reads your code.
Open → 🔒Escape the Syntax: Vault II
Take on a second syntax challenge with new Java code-reading locks and a fresh escape code to earn.
Play →Projects and extensions
Numbers Riddle: Remix Edition
Build the classic Java number riddle, invent your own on paper, and defend it live. Includes requirements, scoring, a starter shell, and a Pre-Flight Check.
Open project → 📝Riddle Design Sheet — Printable
Plan your original riddle, show the algebra and hand tests, and get your teacher’s sign-off before coding. Complete by hand in class.
Open PDF → 📄Riddle Design Sheet — Word
Download the same design sheet in Word format for printing. The assignment still requires handwritten work and sign-off before coding.
Download DOCX → 👤About Me: Console Card
Build a Java console card about yourself using variables, data types, concatenation, and operators.
Open project → 🎮Gamertag Forge
Use your name, String methods, variables, and operators to forge a one-of-a-kind gamertag program.
Open project →College and Career Readiness CCR
12th grade — Student resources and support
ASVAB Drills
Practice five questions at a time with answer explanations, or play Sixty-Second Sprint, Survival, and Second Chance with shuffled answers.
Start practice → 🌊The Layoff Wave — Watch & Reflect
Watch a report on tech layoffs, capture evidence, reflect on career choices and durable skills, and copy your responses for Google Classroom.
Open activity →Competition Preparation TSA
Technology Student Association competitive-event preparation · 2026–27 season
ASVAB Practice Career readiness
Practice across the Armed Services Vocational Aptitude Battery subject areas and find what to study next. These are practice activities, not official ASVAB scores.