History of programming timeline: what happened when?: timeline worksheet for Grade 12, page 1 preview

Timeline worksheet · Coding

History of programming timeline: what happened when? · Grade 12

Match 7 events about history of programming to their dates on a timeline using an event bank. Practices chronology and reading a scaled timeline.

Grade 12 · ages 17 to 18
Medium
10 to 15 minutes
1 page
Free

The answer key is a separate page for grown-ups. Sign in to download it.

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The events

Directions: Each date on the timeline has a box. Write the letter of the event that happened then.

Events
A BASIC is created at Dartmouth College
B John McCarthy creates Lisp
Ada Lovelace publishes the first algorithm for a machine
D Python is first released
E Scratch launches for young coders
F JavaScript is created in about ten days
Grace Hopper's team builds the A-0 compiler
oldest newest

What your child practices

Your child practices chronology and reading a scaled timeline.

Grades and ages: Grade 12, ages 17 to 18
Time: About 10 to 15 minutes
Subject: Coding
Level: Medium for Grade 12
Answer key: Yes, for grown-ups who sign in
Printing: 1 page, US Letter or A4, low-ink option
Updated: October 15, 2026

How to use it

Try the first question together so the format is clear. Then let your child work through the rest, showing their thinking on the page. It is pitched at the expected level for Grade 12, for practice after the topic has been taught.

An answer key comes with it as a separate page that grown-ups download after signing in.

Tip for grown-ups: Find the oldest and newest events first, then fill in the middle.

Done on paper? A grown-up can record it on the child's page in PlayOwl; downloading alone doesn't count as finished.