About LinkedIn

Just a few little things...

Crossword puzzle generator — example grid with across and down clues

Crossword Generator

Free online crossword puzzle maker for teachers. Enter any topic and AI generates words, clues, and a ready-to-print crossword grid. Export as PDF for classroom worksheets and homework.

Word search puzzle — letter grid with hidden words to find

Create printable word search puzzles in seconds. Pick a topic or paste your own vocabulary list and get a word find puzzle ready for print. Great for spelling practice, ESL lessons, and classroom activities.

Printable maze puzzle with start and finish markers

Generate printable mazes for kids in four difficulty levels. Each maze comes with a themed shape and a solution page. Perfect for early learning worksheets, brain teasers, and rainy-day activities.

Interactive timeline of AI history with people, products, and organizations

Build interactive timelines for history projects and presentations. Add events, group them by era or category, and filter by date range. Export the finished timeline as a PDF poster or share it as a link.

AI flashcard app with illustrated cards and spaced repetition

AI-powered flashcard maker that turns any topic into a study deck. Built-in spaced repetition helps students memorize vocabulary, definitions, and key facts. Works on desktop and mobile for studying anywhere.

Aleksey Kolupaev — technology leader based in Berlin. Over a decade of CTO experience scaling startups and building engineering teams. These days I vibecode small tools for educators on the side.