UD5 Toolkit
Grammar Terms Hangman – Online Guess the Word Game
Classic hangman with linguistic terms (adjective, participle, etc.). Solidify your grammar vocabulary.
Educational Resources & Tools
40+ toolsFamous Book Quote Finder – Online Search by Keyword
Enter a keyword or author to find classic quotes from public domain works. Inspiration tool.
Density of Everyday Objects – Online Will It Float?
Select common materials (wood, plastic, metals) and see density chart. Predict floating. Fun science.
Cursive Typing Practice – Online Fun Script Keyboard Input
Type a passage and see it appear in a realistic cursive font. Helps connect handwriting to digital text.
Reading Log – Online Track Minutes & Books Completed
Simple interface for kids to log reading minutes and pages. Add book titles. Print weekly report. Local.
Simple Circuit Simulator – Online Visual Resistor LED
Drag a battery, resistor, LED onto a grid and simulate current flow. Show Ohm's law in action.
Geometry Area Quiz – Online Calculate Triangle, Circle, etc.
Random shapes appear; compute the area mentally. Multiple choice. For middle schoolers.
Multiplication Grid Challenge – Online Fill the Times Table
Complete a 10x10 multiplication grid against the clock. A fun way to master times tables.
Random Wikipedia Article Viewer - Online Learn Something Random
Fetches a random Wikipedia article summary via API. Read interesting facts. Simple knowledge discovery tool. No data collected.
GPA Calculator 4.0 Scale - Online Semester & Cumulative Tool
Calculate semester or cumulative GPA on a 4.0 scale. Add courses, credit hours, and letter grades. Instant calculation. No data storage.
Spelling Test Practice - Online Audio Dictation & Typing
Hear a word spoken by browser TTS and type the spelling. Choose difficulty or paste your own list. Great for kids. Local only.
Periodic Table Quiz - Online Learn Element Symbols & Names
Quiz yourself on element symbols, names, and atomic numbers. Multiple modes: element to symbol, symbol to element. Score tracking. Great for chemistry students.
Country Dialing Code Quiz - Online Learn International Prefixes
Test yourself on international calling codes. Random country, type the code. Or reverse. Perfect for travelers.
Class Attendance Tracker - Online Log Present / Absent Percentage
Track attendance for multiple subjects. Mark present/absent and see percentage. Data in localStorage. Simple student tool.
Scientific Notation Converter - Online Exponential & Decimal Swap
Convert between scientific notation (a × 10^n) and decimal form. Also supports engineering notation. Instant, local.
Mental Math Trainer - Online Timed Arithmetic Drills
Practice mental arithmetic with customizable operators and digit count. Timed rounds, score tracking. Works offline. Improve your brain speed.
Random RSA/EC Key Pair Demo - Online Cryptographic Visualization
Generate a dummy RSA or EC public/private key pair for educational visualization. Shows key structure and ASN.1 dump. Not for production use.
Ham Radio Q‑Code Quiz – Online Test Your Knowledge
Randomly show a Q-code and select correct meaning. Learn while having fun. For your license exam.
Final Exam Grade Calculator - Online What You Need to Score
Determine what score you need on your final exam to achieve your target overall grade. Enter current grade, weight, desired grade. Local only.
Number Line Generator - Online Printable Math Visual Aid
Create custom number lines (0-20, negative, fractions, decimals) for math education. Adjustable ticks and labels. Instant download.
Alphabet Tracing Worksheet - Online Preschool Letter Practice
Generate customizable alphabet tracing sheets with uppercase and lowercase letters. Select letters to focus on. Instant print. Local only.
Cursive Writing Worksheet Generator - Online Traceable Handwriting
Type any text and generate a printable cursive handwriting practice sheet with dotted lines. Choose font styles. Local generation.
World Flag Quiz - Online Guess the Country by Flag
Identify countries from their flags. Multiple difficulty levels and regions. Track your high score. Educational geography game. Works offline.
Math Worksheet Generator - Online Printable Drills for Kids
Generate printable math worksheets for addition, subtraction, multiplication, and division. Choose difficulty and number of problems. Answer key included.
Language Flashcard Randomizer - Online Vocabulary Trainer
Paste word pairs (or load pre-made sets) and practice with randomized flashcards. Flip to reveal translation, mark as known/unknown. Local data, no login.
Coin Toss Probability Demonstrator – Online Long‑Run Simulator
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
Morse Code Speed Tapping Game – Online Decode & Type Race
Morse characters flash on screen; you must tap them correctly on a single button. Points for accuracy and speed. Learn Morse in a fun way.
Old English / Anglo‑Saxon Word Lookup – Online Basic Translator
Type a modern English word and get a possible Old English equivalent. Works offline with a limited but curated wordlist. Learn history.
Homework Time Estimator – Online Break Tasks Into Chunks
List assignments with estimated minutes. See total time and break into Pomodoro sessions. Stay motivated.
Bird Call Identification Quiz – Online Listen & Match
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
English Irregular Verb Quiz – Online Past Tense Practice
Randomly given base form, type past simple and past participle. Score tracking.
Element Discovery Story – Online Random History of Elements
Click to get a random element and a short story about its discovery and uses. Fascinating science.
Spaced Repetition Flashcards - Online Leitner Box Method
Create cards and review using a spaced repetition algorithm (Leitner box simulation). Cards stored locally. Improve exam prep.
Sight Words Flashcard Generator - Online Dolch & Fry Lists
Create printable sight word flashcards from Dolch or Fry lists by grade level. Choose font size and card layout. Local only.
Poetry Meter Detector – Online Iambic, Trochaic, etc.
Paste a line of poem and see which syllable stresses create a particular meter. Educational tool.
Spring Constant & Elastic Energy Calculator – Online Hooke's Law
Enter spring constant and displacement to find force and stored energy. Visual compression.
Guess the Idiom Game – Online Literal vs Figurative
See a literal illustration of an idiom and guess the phrase. Fun for English learners.
On This Day Trivia Generator – Online Historical Events
Shows a random historical event that occurred on today's date. Fun daily knowledge snippet.
Percent Error & Relative Error Calculator - Online Lab Report Tool
Calculate absolute error, relative error, and percent error between experimental and theoretical values. For science students. Instant local math.
Famous Painting Quiz – Online Guess Artist & Title
See a clip of a famous artwork and choose the correct title. Art history fun. Local images.
US States & Capitals Quiz - Online Geography Memory Game
Interactive quiz to learn all 50 US state capitals. Choose mode: capital to state or state to capital. Map highlight available. Works offline.
Kanji Stroke Count Quiz – Online Guess & Order
A kanji appears; you guess how many strokes it has. Learn stroke order awareness.